東京理科大学 先進工学部物理工学科/理学部 応用物理学科

樋口研究室

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03-5876-1401（樋口直通）

論文発表

原著論文

査読付き論文：209本, 　解説・著書：6本,　査読なし論文：36本　[2024年4月1日現在]

2024年

  1. Magnetization Vector Rotation Reservoir Computing Operated by Redox Mechanism
    Wataru Namiki, Daiki Nishioka, Takashi Tsuchiya, Tohru Higuchi, and Kazuya Terabe
    Nano Lett. (2024) 3c05029.
  2. Few- and single-molecule reservoir computing experimentally demonstrated with surface enhanced Raman scattering and ion-gating
    Daiki Nishioka, Yoshitaka Shingaya, Takashi Tsuchiya, Tohru Higuchi and Kazuya Terabe
    Science Advances 10, eadk6438 (2024) 1-13 　(プレスリリース)
  3. Inverted input method for computing performance enhancement of ion-gating reservoir
    Y. Yamaguchi, D. Nishioka, W. Namiki, T. Tsuchiya, M. Imura, Y. Koide, T. Higuchi and K. Terabe
    Applied Physics Express (APEX) 17, 2 (2024) 024501.
  4. High Surface Proton Conduction of a-Axis Oriented CeO2-d Thin Film on (200) YSZ Substrate
    Minami Tani, Go Notake, Takemasa Kadowaki, Mariko Yamada and Tohru Higuchi
    Japanese Journal of Applied Physics 63 (2024) 02SP88.
  5. Surface Oxide Ion Conduction of BaCe0.5Pr0.3Y0.2O3-δ Thin Film with Complex Mixed Valence States
    Go Notake, Takemasa Kadowaki, Minami Tani and Tohru Higuchi
    Japanese Journal of Applied Physics 63 (2024) 03SP21
  6. Asymmetric transition of electrical resistance in an all-solid-state redox device with Fe3O4 and Li-ion electrolyte thin films for physical reservoir computing
    Wataru Namiki, Takashi Tsuchiya, Daiki Nishioka, Tohru Higuchi and Kazuya Terabe
    Japanese Journal of Applied Physics 63 (2024) 03SP13

2023年

  1. Redox-based Ion-Gating Reservoir consisting of (104)oriented LiCoO2 film, Assisted by Physical Masking
    Kaoru Shibata, Daiki Nishioka, Wataru Namiki, Takashi Tsuchiya, Tohru Higuchi, and Kazuya Terabe
    Scientific Reports 13, 21060 (2023) 1-16
  2. Enhanced Synaptic Characteristics of HxWO3-Based Neuromorphic Devices Achieved by Current Pulse Control for Artificial Neural Networks
    Daiki Nishioka, Takashi Tsuchiya, Tohru Higuchi and Kazuya Terabe
    Neuromorphic Computing and Engineering 3, 034008 (2023) 1-12
  3. Room temperature fabrication of highly proton conductive amorphous zirconia-based thin films achieved by precise control of nanostructure
    Makoto Takayanagi, Takashi Tsuchiya, Daiki Nishioka, Tohru Higuchi, and Kazuya Terabe
    Journal of Materials Chemistry C (2023) D3TC02084C
  4. Experimental Demonstration of High-Performance Physical Reservoir Computing with Multi Detected Nonlinear Spin Wave Interference
    Wataru Namiki, Daiki Nishioka, Yu Yamaguchi, Takashi Tsuchiya, Tohru Higuchi, and Kazuya Terabe
    Advanced Intelligent Systems 202300228 (2023) 1-15
  5. 固体電解質界面の電気二重層容量制御による充放電速度変調の実現
    髙栁 真、樋口 透
    クリーンエネルギー、vol.32, No.7 (2023) 25-32
  6. Ultrafast-switching of an All-solid-state Electric Double Layer Transistor with a Porous Yttria-Stabilized Zirconia Proton Conductor and the Application to Neuromorphic Computing
    M. Takayanagi, T. Tsuchiya, D. Nishioka, M. Imura, Y. Koide, T. Higuchi, and K. Terabe
    Materials Today Advances 18 (2023) 100393
  7. A Redox-based Ion-Gating Reservoir, Utilizing Double Reservoir States in Drain and Gate Nonlinear Responses
    Tomoki Wada, Daiki Nishioka, Wataru Namiki, Takashi Tsuchiya, Tohru Higuchi and Kazuya Terabe
    Advanced Intelligent Systems 202300123 (2023) 1-12 　(プレスリリース) (Press release.) (日本経済新聞) (読売新聞) (Yahoo! Japan)
  8. Accelerated/decelerated dynamics of the electric double layer at hydrogen-terminated diamond/Li+ solid electrolyte interface
    Makoto Takayanagi, Takashi Tsuchiya, Daiki Nishioka, Masataka Imura, Yasuo Koide, Tohru Higuchi and Kazuya Terabe
    Materials Today Physics 31 (2023) 101006 (プレスリリース) (Press release.) (Yahooニュース) (日刊工業新聞)
  9. Neuromorphic Learning and Forgetting Functions of Pt⁄Ti0.99Sc0.01O2−δ/Pt Multilayer by Schottky Barrier Modulation
    Mitsuki Taniguchi, Tomoasa Takada, Kisara Tomiyoshi, Tomoki Wada, Daiki Nishioka, and Tohru Higuchi
    Jpn. J. Appl. Phys. 62 (2023) SG1022

2022年

  1. Edge-of-chaos learning achieved by ion-electron–coupled dynamics in an ion-gating reservoir
    DAIKI NISHIOKA, TAKASHI TSUCHIYA, WATARU NAMIKI, MAKOTO TAKAYANAGI, MASATAKA IMURA, YASUO KOIDE, TOHRU HIGUCHI, AND KAZUYA TERABE
    Science Advances　Vol. 8, No.50 (2022) eade1156(プレスリリース)
  2. In situ manipulation of perpendicular magnetic anisotropy in half-metallic NiCo2O4 thin film by proton insertion
    T. Wada, W. Namiki, T. Tsuchiya, D. Kan, Y. Shimakawa, T. Higuchi, K. Terabe
    Jpn. J. Appl. Phys. 61(2022) SD1023. Spotlights（2022）に選出　Highlights of 2022に選出
  3. 固体電解質界面の電気二重層効果を定量評価する新手法の開発
    土屋敬志,寺部一弥, 高栁 真, 樋口 透
    日本工業出版　クリーンエネルギー　Vol. 31, No.2 (2022)　26-31
  4. Surface Proton Conduction below 100°C of Ce0.80Sm0.20O2-δ Thin Film with Oxygen Vacancies
    G. Notake, D. Nishioka, H. Murasawa, M. Takayanagi, Y. Fukushima, H. Ito, T. Takada, M. Kitamura, D. Shiga, H. Kumigashira, and T. Higuchi
    Jpn. J. Appl. Phys. 61(2022) SD1017
  5. Nanoionics-Based Neuromorphic Function of Pt/Ti0.96Co0.04O2-d/Pt Multilayer Device Operating at Low Pulse Voltage
    T. Takada, Y. Yamaguchi, M. Taniguchi, Y. Fukushima, H. Ito, G. Notake, D. Nishioka,M. Takayanagi, and T. Higuchi
    Jpn. J. Appl. Phys. 61(2022) SD1023

2021年

  1. In situ Hard X-ray Photoelectron Spectroscopy on the Origin of Irreversibility in Electrochromic LixWO3 Thin Films
    Makoto Takayanagi, Takashi Tsuchiya, Shigenori Ueda, Tohru Higuchi, and Kazuya Terabe
    Applied Surface Science 568 (2021) 150898 (プレスリリース, Press Release)
  2. The Electric Double Layer Effect and its Strong Suppression at Li+ Solid Electrolyte/Hydrogenated Diamond Interfaces
    T. Tsuchiya, M. Takayanagi, K. Mitsuishi, M. Imura, S. Ueda, Y. Koide, T. Higuchi, and K. Terabe
    Communications Chemistry 4 (2021) 117（プレスリリース、Press Release）
    マイナビニュース、gooニュース、biglobeニュース、exciteニュース、Mapionニュース、smarthouse-readers
    Mirage News, Medium US, Science Daily, Phys.orgなどで紹介
  3. Substrate Effect on the Neuromorphic Function of Nanoionics-Based Transistors Fabricated using WO3 Thin film
    J. Manikandan, T. Tsuchiya, M. Takayanagi, K. Kawamura, T. Higuchi, K.Terabe, R. Jayavel
    Solid State Ionics 364 (2021) 115638-1~7
  4. Light reflectance and photoelectron yield spectroscopies enable acceptor level measurement in p-type Ba1-xTiO3 semiconductor
    Saya Fujii, Jun Kano, Norihiro Oshime, Tohru Higuchi, Yuta Nishina, Tatsuo Fujii, Naoshi Ikeda, and Hiromi Ota
    Journal of Applied Physics 129, 084105 (2021)
  5. Surface Electron–Ion Mixed Conduction of BaTiO3-d Thin Film with Oxygen Vacancies
    T. Takada, T. Fujita, T. Imagawa, E. Yamamoto, J. Kano, D. Shiga, K. Horiba, H. Kumigashira, and T. Higuchi
    J. Phys. Soc. Jpn 90 (2021) 014707

2020年

  1. Room-Temperature Manipulatipn of Magnetization Angle, Achieved with an All-Solid-State Redox Device
    Wataru Namiki, Takashi Tsuchiya, Makoto Takayanagi, Tohru Higuchi, and Kazuya Terabe
    ACS NANO(2020) Vol.14, Issue 11, 16065-16072、プレスリリース
    EurekAlert版プレスリリース
  2. An Enhancement of Photovoltage by Electronic Structure Evolutions in Multiferroic Mn-doped BiFeO3 Thin Films
    S. Nakashima, T. Higuchi, A. Yasui, T. Kinoshita, H. Fujisawa and M. Shimizu
    Scientiic Report10 (2020) 15108 ・プレスリリース
  3. 固体酸化物燃料電池の極薄電解質膜の開発－常温付近での物理吸着した水による特異な表面プロトン伝導－
    樋口透、西岡大貴
    日本工業出版「クリーンエネルギー」、(2020) 6月号
  4. Oxygen-Tolerant Operation of All-Solid-State Ionic-gating Devices: Advantage of All-Solid-State Structure for Ionic-Gating
    D. Nishioka, T. TSUCHIYA, T. HIGUCHI, K. TERABE
    Jpn. J. Appl. Phys.59 (2020) SIIG09
  5. Surface Proton Conduction of Sm-doped CeO2-δ Thin Film preferentially grown on Al2O3 (0001)
    D. Nishioka, T. Tsuchiya, W. Namiki, M. Takayanagi, K. Kawamura, T. Fujita, R. Yukawa, K. Horiba, H. Kumigashira and T. Higuchi
    Nanoscale Research Letters 15(2020) 42.
    プレスリリース(TUS版、EurekAlert版)
  6. A Mesoporous SiO2 Films-based Ionic Decision-maker for Solving Multi-armed Bandit Problems
    D. Etoh, T. Tsuchiya, Y. Kitagawa, M. Takayanagi, Y. Itoh, T. Tsuruoka,
    T. Higuchi, K. Terabe
    Jpn. J. Appl. Phys. 59 (2020) SIIG01
  7. A Graphene Oxide-Based Ionic Decision-Maker for Simple Fabrication and Stable Operation
    Y. Kitagawa, T. Tsuchiya, D. Etoh, M. Takayanagi, W. Namiki, T. Higuchi and K. Terabe
    Jpn. J. Appl. Phys. 59 (2020) SIIG03.

2019年

  1. Increasing coercivity of ferromagnetic zinc oxide with thermal acetylene treatment
    Jappinen, L. Higuchi, T. Huhtinen, H. Paturi, P. Salonen, J.
    Proc. IEEE Conf. Nanotechnology 2018, 8626406 (2019)
  2. Surface Electron-Ion Mixed Conduction of Ti0.99Sc0.01O2-d Thin Film with Lattice Distortion and Oxygen Vacancies
    Kinya Kawamura, Masaki Sekine, Daiki Nishioka, Ryu Yukawa, Koji Horiba, Hiroshi Kumigashira, and Tohru Higuchi
    J. Phys. Soc. Jpn. 88(2019) 054711
  3. Conductivity Modulation by CaVO3-based All-solid-state Redox Transistor with Ion Transport of Li+ or H+
    Ｍakoto Takayanagi, Ｔakashi Tsuchiya, Wataru Namiki,Yuki Kitagawa, Daiki Etoh,
    Trans. Master. Res. Soc. Jpn .44 (2019) 57-60
  4. Sr-Diffusion-Induced Inhibition of Epitaxial Growth of Ca1-xSrxVO3 Thin Film on a LaAiO3 Substrate in Pulsed Laser Deposition
    Ｍakoto Takayanagi, Ｔakashi Tsuchiya, Wataru Namiki, Ｙuki Kitagawa, Daiki Etoh,Ｄaiki Ｎishioka, Tohru Ｈiguchi, Kazuya Terabe
    Ｊpn.J.Apple.Phys58 (2019) SODG08
  5. Oxide Ion and Proton Conduction Controlled in Nano-grained Yttria Stabilized ZrO2Thin Films Prepared by Pulse Laser Deposition
    D. Etoh, T.Tsuchiya, M.Takayanagi, T. Higuchi, and K. Tarabe
    Jpn. J. Appl. Phys.58 (2019) SDDG01

2018年

  1. Surface Electronic Structure of Post-Annealed La0.67Sr0.33MnO3 Epitaxial Thin Films on SrTiO3(100)
    Kinya Kawamura, Takashi Tsuchiya, Makoto Takayanagi, Wataru Namiki, Kazuya Terabe, and Tohru Higuchi
    Trans. Mater. Res. Soc. Japan 43 (2018) 179-183
  2. Unexpected Metal-Insulator Transition in Thick Ca1-xSrxVO3 Film on SrTiO3 (100) Single Crystal
    M. Takayanagi, T. Tsuchiya, W. Namiki, S. Ueda, M. Minohara, K. Horiba, H. Kumigashira, K. Terabe, and T. Higuchi
    Appl. Phys. Lett. 112, 133106 (2018) 　　プレスリリース　　　科学新聞（4/20）の記事
  3. Anomalous Electron Conduction of Nd0.6Sr0.4FeO3-d Thin film with Lattice Distortion and Oxygen Vacancies
    Wataru Namiki, Takashi Tsuchiya, Takuya Kawaguchi and Tohru Higuchi
    Trans. Mater. res. Soc. Japan 43 (2018) 175-178
  4. Electron-Ion Mixed Conduction of Amorphous WO3-x Thin Film Probed by Soft-X-Ray Spectroscopy
    T. Sugimoto, K. Kawamura, T. Kawaguchi, T. Tsuchiya, C. Kudo, and T. Higuchi
    Trans. Mater. Res. Soc. Japan 43 (2018) 101.
  5. Correlated Metal SrVO3 Based All-Solid-State Redox Transistors Achieved by Li+ or H+ Transport
    Makoto Takayanagi, Takashi Tsuchiya, Wataru Namiki, Tohru Higuchi, Kazuya Terabe
    J. Phys. Soc. Jpn. 87 (2018) 034802.
  6. Neuromorphic Transistor Achieved by Redox Reaction of WO3 Thin Film
    T. Tsuchiya, M. Jayabalan, K. Kawamura, M. Takayanagi, T. Higuchi, R. Jayavel and K. Terabe
    Jpn. J. Appl. Phys. 57 (2018) 04FK01
  7. Stabilization of the high-temperature phase and total conductivity of yttrium-doped lanthanum germanate oxyapatite
    K. Kobayashi, Y. Igarashi, N. Saito, T. Higuchi, Y. Sakka, T. S. Suzuki
    J. Ceram. Soc. Jpn. 26 (2018) Issue 2, Pages 91-98.

2017年

  1. Thickness-dependent Surface Proton Conduction in (111) Oriented Yttria-stabilized Zirconia Thin Film
    M. Takayanagi, T. Tsuchiya, K. Kawamura, M. Minohara, K. Horiba, H. Kumigashira, and T. Higuchi
    Solid State Ionics 311 (2017) 46-51
  2. Oxide Ion Conduction of BaCe0.80Zr0.10Y0.10O3-d Thin Film with Oxygen Vacancies
    M. Ochi, N. Namiki, M. Minohatra, K.Horiba, H.Kumigasira and T.Higuchi
    Trans. Mater. Res. Soc. Japan 42(2017) 97-100
  3. Electron Conduction of Nd0.6Sr0.4FeO3-d Thin Film with Oxygen Vacancies Prepared by RF Magnetron Sputtering
    W. Namiki, T.Tsuchiya, M. Takayanagi, S. Furuichi, M. Minohara, M. Kobayashi, K. Horiba, H. Kumigashira, T. Higuchi
    J. Phys. Soc. Jpn (2017) 80（2017）074704
  4. Hole-Proton Mixed Conduction of Perovskite-Oxide Thin Film with Oxygen Vacancies and Lattice Distortion for SOFC Electrode
    T. Higuchi, S. Furuichi, W. Namiki, M. Takayanagi, M. Minohara, K. Horiba, H. Kumigashira and T. Tsuchiya
    ECS Transactions 78 (2017) 1973-1976
  5. Surface Electronic Structure of Proton-doped YSZ Thin Film by Soft-X-ray Photoemission Spectroscopy
    M. Takayanagi, T. Tsuchiya, M. Minohara, M. Kobayashi, K. Horiba, H. Kumigashira, and T. Higuchi
    Trans. Mater. Res. Soc. Japan.42.（2017）61～64
  6. Electrical-Pulse-Induced Resistivity Modulation in Pt/TiO2-d/Pt Multilayer Device Related to Nanoionics-Based Neuromorphic Function
    Kinya Kawamura, Takashi Tsuchiya, Makoto Takayanagi, Kazuya Terabe, Tohru Higuchi
    Jpn. J. Appl. Phys.56 (2017) 06GH01
  7. Structural and Electrical Properties of BaPrO3-d Thin Film with Oxygen Vacancies
    Shoto Furuichi, Takashi Tsuchiya, Makoto Minohara, Masaki Kobayashi, Koji Horiba, Hiroshi Kumigashira and Tohru Higuchi
    Trans. Mater. Res. Soc. Japan 42　(2017) 15～18
  8. 197. Electron-Ion Mixed Conduction of Nd0.6Sr0.4FeO3 Cathode Electrode Thin Film for Solid Oxide Fuel Cell
    Wataru Namiki, Makoto Takayanagi, Shoto Furuichi, Takashi Tsuchiya, Makoto Minohara, Masaki Kobayashi, Koji Horiba, Hiroshi Kumigashira, and Tohru Higuchi
    ECS Trans. 2017 75(42): 83-88; doi:10.1149/07542.0083ecst
  9. Ion Conduction of BaPrO3-δ Thin Film with Mixed Valence State for SOFC Anode Electrode
    Shoto Furuichi, Takashi Tsuchiya, Makoto Minohara, Masaki Kobayashi, Koji Horiba, Hiroshi Kumigashira, and Tohru Higuchi
    ECS Trans. 2017 75(42): 99-103; doi:10.1149/07542.0099ecst
  10. Proton Conduction on YSZ Electrolyte Thin Films Prepared by RF Magnetron Sputtering
    Makoto Takayanagi, Shoto Furuichi, Wataru Namiki, Takashi Tsuchiya, Makoto Minohara, Masaki Kobayashi, Koji Horiba, Hiroshi Kumigashira, and Tohru Higuchi
    ECS Trans. 2017 75(42): 115-120; doi:10.1149/07542.0115ecst
  11. Resonant Photoemission and X-ray Absorption Spectroscopies of Lithiated Magnetite Thin Film
    T. Tsuchiya, K. Kawamura, W. Namiki, S. Furuichi, M. Takayanagi, M. Minohara, M. Kobayashi, K. Horiba, H. Kumigashira, K. Terabe, T. Higuchi
    Jpn. J. Appl. Phys. 56 (2017) 064CK01

2016年

  1. Metal-Insulator Transition of Valence-Controlled VO2 Thin Film Prepared by RF Magnetron Sputtering Using Oxygen Radical
    Takaaki Suetsugu, Yuichi Shimazu, Takashi Tsuchiya, Masaki Kobayashi, Makoto Minohara, Enju Sakai, Koji Horiba, Hiroshi Kumigashira, Tohru Higuchi
    Jpn. J. Appl. Phys. 55 (2016)
  2. Electronic Structure of c-axis Controlled α-Fe2O3 Thin Film Probed by Soft-X-Ray Spectroscopy
    Kinya Kawamura, Naoya Suzuki, Takashi Tsuchiya, Shohei Yamaguchi, Masanori Ochi, Takaaki Suetsugu, Makoto Minohara, Masaki Kobayashi, Koji Horiba, Hiroshi Kumigashira and Tohru Higuchi
    Jpn. J. Appl. Phys. 55(2016) 06GJ04
  3. Electrical and Structural Properties of TiO2-d Thin Film with Oxygen Vacancies Prepared by RF Magnetron Sputtering Using Oxygen Radical
    Kinya Kawamura, Naoya Suzuki, Takashi Tsuchiya, Yuichi Shimazu, Makoto Minohara, Masaki Kobayashi, Koji Horiba, Hiroshi Kumigashira, and Tohru Higuchi
    Jpn. J. Appl. Phys. 55(2016) 06GJ08
  4. Comparison of subthreshold swing in SrTiO3-based all-solid-state electric-double-layer transistors with Li4SiO4 or Y-stabilized-ZrO2 solid electrolyte
    Takashi Tsuchiya, Masanori Ochi, Tohru Higuchi, Kazuya Terabe
    Jpn. J. Appl. Phys. 55(2016) 06GJ03
  5. Electrical and Structural Properties of BaCe0.85Ru0.05Y0.10O3-d Thin Film Prepared by RF Magnetron Sputtering
    Masanori Ochi, Takashi Tsuchiya, Shohei Yamaguchi, Takaaki Suetsugu, Naoya Suzuki, Masaki Kobayashi, Makoto Minohara, Koji Horiba, Hiroshi Kumigashira and Tohru Higuchi
    Jpn. J. Appl. Phys. 55(2016) 06GJ02
  6. In Situ Tuning of Magnetization and Magnetoresistance in Fe304 Thin Film Achieved with All-Solid-State Redox Device
    T.Tsuchiya, K.Terabe, M. Ochi, T.Higuchi, M.Osada, Y.Yamashita, S.Ueda, M.Aono
    ACS Nano 10 (2016) 5b07374
    プレリリース
  7. Electron-ion mixed conduction of BaCe0.9Y0.1O3-d thin film generated by Ru Substitution
    M.Ochi, T.Tuchiya, S.Yamaguchi, T.Suetsugu, N.Suzuki, M.Kobayashi, M.Minohara, K.Horiba, H.Kumigashira, T.Higuchi
    J.Phys.Soc.Jpn. 85 (2016) 034705

2015年

  1. Hole-ion mixed conduction of orientation-controlled BaPrO3-d thin film with mixed valence states
    T. Higuchi, A. Oda, T. Tsuchiya, T. Suetsugu, N. Suzuki, S. Yamaguchi, M. Minohara, M. Kobayashi, K. Horiba, and H. Kumigashira
    J. Phys. Soc. Jpn. 84(2015) 114708
  2. Electro-Ion Mixed Conduction of Ru-Doped BaCe0.9Y0.1O3-δ Thin Film
    Tohru Higuchi, Tomoyuki Yamashita, Tomohiro Owaku, Yuichi Shimazu,　Hiroyuki Kato, Masaki Kobayashi and Hiroshi Kumigashira
    Ｔrans. Mater. Res. Soc. Jpn　40（2015）419～422
  3. Effect of Ionic Conductivity on Response Speed of SrTiO3-based All-solid-state Electric-double-layer Transistor
    Tsuchiya, Takashi; Ochi, Masanori; Higuchi, Tohru; Terabe, Kazuya; Aono, Masakazu
    ACS Appl. Mater. Interfaces, 7(2015) 12254.DOI: 10.1021/acsami.5b02998
  4. Electronic structure for b-axis orientated of VO2 thin film with mixed-valent state by soft X-ray spectroscopy
    Takaaki Suetsugu, Yuichi Shimazu, Takashi Tsuchiya, Masaki Kobayashi, Enju Sakai, Hiroshi　Kumigashira, and Tohru Higuchi
    J. Phys. Soc. Jpn. 84, 064715 (2015)
  5. Metal-Insulator transition of c-axis controlled V2O3 thin film
    Yuichi Shimazu, Teppei Okumura, Takashi Tsuchiya, Atsushi, Shimada, Kenji Tanabe, Kazuyasu Tokiwa, Masaki Kobayashi, Koji Horiba,Hiroshi Kumigashira, Tohru Higuchi
    J. phys. Soc. jpn. 84(2015) 064701
  6. Electronic Structure and Oxygen Ion Conductivity of As-Deposited Ce0.90Sm0.10O2-δThin Film prepared by RF Magnetron Sputtering
    S.Yamaguchi, Y.Tasaki, M.Kobayashi, K.Horiba, H.Kumigashira, and Tohru Higuchi
    Jpn.J.Appl.Phys.54(2015)06FJ04-1～5
  7. Electronic Structure of Ti1-xFexO2-δ Thin Film with Oxygen Vacancies Probed by Soft-X-Ray Spectroscopy
    Katsuya Usui, Shohei Yamaguchi, Naoya Suzuki, Yuichi Shimazu,Takashi Tsuchiya, Enju Sakai, Masaki Kobayashi, Koji Horiba, Hiroshi Kumigashira and Tohru Higuchi
    Jpn. J. Appl. Phys.54 (2015)06FJ07-1～4.
  8. Electronic Structure of Bapr1-xYbxO3-δby Soft-X-Ray Spectroscopy
    Tohru Higuchi, Asuka Oda, Yi-Sheng Liu, Per-Anders Glans and Jinghua Guo
    Trans.Mater.Res.Soc.Japan40，No.1（2015）37～40
  9. Proton conduction of BaCe0.90Y0.1003-d Thin Film with lattice distortion
    T.Higuchi, T.Okawa, Y.Iida, E.Sakai, M.Kobayashi and Kumigashira
    Solid State Ionics270 (2015) 1～5.

2014年

  1. Research and Development of the Coprecipitation Process for Lanthanum Germanate Oxyapatite
    Kiyoshi Kobayashi，Shouta Kitajima，Yukihito Igarashi，Tohru Higuchi，and Yoshio Sakka
    J.Am.Ceram.Soc (2014) Vol.97，No.11，13302-1～5
  2. クエン酸燃焼法によるオキシアパタイト型ランタン・ゲルマネートの低温合成プロセス開発
    五十嵐之人，北嶋将太，小林清，樋口透，目　義雄
    粉末および粉末冶金（2014）Vol.61，No.12，582～586
  3. Electrical Conductivity of Sc-doped TiO2 Thin Film Prepared by RF Magnetron Sputtering
    T. Inoue, T. Okumura, Y. Shimazu, E. Sakai, H. Kumigashira and T. Higuchi
    Jpn. J. Appl. Phys. 53, 06JG03 (2014)
  4. Growth of TiO2-δ Thin Film by RF Magnetron Sputtering Using Oxygen Radical and Ti-Metal
    Y. Shimazu, T. Okumura, E. Sakai, H. Kumigasira, M. Okawa, T. Saitoh and T. Higuchi
    Jpn. J. Appl. Phys. 53, 06JG01 (2014)
  5. Electronic Structure of V2O3 Thin Film Prepared by RF Magnetron Sputtering using Oxygen Radical and V-Metal
    Y. Shimazu, T. Okumura, A. Shimada, K. Tanabe, K. Tokiwa, E. Sakai, H. Kumigasira and T. Higuchi
    Jpn. J. Appl. Phys. 53, 06JG05 (2014)

2013年

  1. Structural and electronic properties of anatase Ti1-xFexO2-d thin film prepared by RF magnetron sputtering
    K. Usui, T. Okumura, E. Sakai, H. Kumigashira, and T. Higuchi
    J. Phys.: Condens. Matter. 502 (2013) 012001-1～4
  2. Proton Conduction of SrZr0.95Y0.05O3-d Thin Film Prepared by RF Magnetron Sputtering
    A. Oda, T. Okumura, and T. Higuchi
    ECS Transactions 57 (2013) 1019-1023.
  3. DEVELOPMENT OF NEW SYNTHESIS ROUTE OF LANTHANUM GERMANATE OXYAPATITE FROM HOMOGENEOUS AQUEOUS SOLUTION
    S. Kitajima, K. Kobayashi, T. Higuchi, Y. Sakka
    Proc. Pac. Rim (2013) 586-589.

2012年

  1. Hole and Ion Conductions of Sc-doped SrTiO3 Thin Film Prepared by RF Magnetron Sputtering
    H　Kato,T Okumura,E Sakai, H Kumigashira, and T Higuchi
    Ｔrans. Mater. Res. Soc. Jpn. 37 (2012) 571-574.
  2. Surface Electronic Structure of BaZr1-X Yx03-d by Soft-X-ray Spectroscopy
    T Higuchi, F Iguchi, Y Nagao, N Sata, Y Liu, P Glans, J-H.Guo and H Yugami
    Trans. mater. Res. Soc. Jpn. 37 (2012) 575-578.
  3. Electronic Structure of SrTi0.99Sc0.01O3 Thin film by high-resolution soft-X-rag spectro scopy
    T Okumura, T Inoue,Y tasaki, E sakai H Kumigashira,T Higuchi
    J. Phys. Soc. Jpn. 81(2012) 094705-1～4
  4. Structural and Optical Properties of SrTi1-xScx03 Thin Film Prepared by RFMagnetron Sputtering
    Teppei Okumura, Yusuke Kobayashi, Fuyuki Ihara, and Tohru Higuchi
    Trans. Mater. Res. Soc. Jpn. 37 (2012) 85～88
  5. Structura and Electrical Puroperties of BaCe0.90Y0.1003-d Thin Film on Al203 Substrate
    Tomohiro Owaku, Yasutaka Iida, Hiroyuki Fukawa, and Tohru Higuchi
    Trans. Mater. Res. Soc. Jpn. 37 (2012) 81～84
  6. Electronic Structure of BiFe1-xMx03 (M=Mn and Co) Thin Films by Soft-X-Ray Spectroscopy
    Tohru Higuchi, Hiroshi Naganuma, Jun Miura, Yosuke Inoue, Yi-Sheng Liu, Per-Anders Glans, Jinghua Guo and Soichiro Okamura
    Trans. Mater. Res. Soc. Jpn. 37 (2012) 77～80

2011年

  1. Electronic Structure of KH2PO4 Single Crystal Studied by Soft-X-Ray Spectroscopy
    T. Nishina, T. Higcuhi, E. Magome, Olade Velasco, Long Chen, Li Yang, J. Guo, M. Fukunaga, M. Komukae
    Ferroelectrics (2011) 642-645
  2. Growth of Sc-doped TiO2 Thin Film by RF Magnetron Sputtering
    Kazuya Tomiyama, Yusuke Kobayashi, Mitsuru Tsuda, Tohru Higuchi
    Jpn. J. App. Phys. 50 (2011) 065502
  3. Valence States of BaCe1-xYxO3-d Ceramics by Soft-X-Ray Spectroscopy
    T. Higuchi, H. Fukawa and H. Takahashi
    Trans. Mater. Res. Soc. Jpn. 36 (2011) 15-18
  4. Electronic Structure of La0.6Sr0.4FeO3 Thin Film by Soft-X-Ray Spectroscopy
    T. Higuchi, M. Matsumoto, W. Yang, P. Olalde-Velasco, J Chen, Y. Liu, and J. -H Guo
    Trans. Mater. Res. Soc. Jpn. 36 (2011) 19-22
  5. Electronic Structure in the Bulk State of SrTiO3-d by Soft-X-Ray Spectroscopy
    T. Higuchi, N. Kato and Y. Suzuki
    Trans. Mater. Res. Soc. Jpn. 36 (2011) 27-30

2010年

  1. Growth of Ba2-xSrxNaNb5O15 Thin Film on La0.05Sr0.95TiO3 Substrate by Pulsed Laser Deposition
    Tohru HIGUCHI, Takeshi HATTORI, and Takeyo TSUKAMOTO
    OPTICAL REVIEW 17 (2010) 313-316

2009年

  1. Electronic Structure of Sr-Doped LaScO3 Single Crystal Annealed under Different Atmospheres
    Yuki Nagao, Jin Liu, Fumitada Iguchi, Tohru Higuchi, Noriko Sata, and Hiroo Yugami
    JAPANESE JOURNAL OF APPLIED PHYSICS 49 (2010) 10208-10210

2008年

  1. Electrical and structural properties of BaCe0.90Y0.10O3−𝛿 thin film on MgO (100) substrate
    H.Hosono, T.Higuchi and T. Hattori
    J. Appl. Phys. 104 (2008) 113704-1~4
  2. Electronic structure of La1-xSrxScO3 probed by soft-X-ray absorption spectroscopy
    T. Higuchi, Y. Nagao, J. Liu, F. Iguchi, N. Sata, T. Hattori, and H. Yugami
    J. Appl. Phys. 104 (2008) 76110-1~3.
  3. Study on Solid State Ionic Materials using Synchrtron Radiation
    T. Hattori and T. Higuchi
    SOLID STATE IONICS (2008) 33-36
  4. Effect of Mn Substitution for Multiferroic BiFeO3 Probed by High-Resolution Soft-X-Ray Spectroscopy
    T. Higuchi, T. Hattori, W. Sakamoto, N. Itoh, T. Shimura, T. Yogo, P. Yao, Y. Liu, P. Glans, C. Chang, Z. Wu and J.. H. Guo
    Jpn. J. Appl. Phys. 47 (2008) 7570-7573
  5. A Tantalum Oxide Electrode for Electrochemical Ozone Generation
    K. Kaneda, K. Kitsuka, Y. Nowatari, M. Ikematsu, M. Iseki, T. Higuchi, T. Hattori, T. Tsukamoto
    ECS Trans. 6, (21) (2008) 33.
  6. Electronic structure of multiferroic BiFeO3 by resonant soft-X-ray emission spectroscopy
    T. Higuchi, Y. Liu, P. Yao, P. Anders, J.-H. Guo, W. Sakamoto, N. Itoh, T. Shimura, T. Yogo and T. Hattori
    Phys. Rev. B 78 (2008) 85102-1~5.
  7. Valence State of Mn-Doped BiFeO3-BaTiO3 Ceramics Probed by Soft X-ray Absorption Spectroscopy
    T. Higuchi, W. Sakamoto, N. Itoh, T. Shimura, T. Hattori, and T. Yogo
    Applied Physics Express (APEX) 1 (2008) 11502-11504.
  8. Ferroelectric and structural properties of Ba2-xSrxNaNb5O15 thin films prepared on La0.05Sr0.95TiO3 substrate
    T. Higuchi, T. Yamasaki, Y. Suzuki, T. Hattori, and T. Tsukamoto
    J. Appl. Phys. 103 (2008) 84108-1~4.
  9. Effects of Processing Temperature on the Structure and Ferroelectric Properties of Ba2-xSrxNaNb5O15 Thin Films Prepared by Pulsed Laser Deposition
    T. Yamasaki, T. Higuchi, T. Hattori and T. Tsukamoto
    J. Alloys and Compounds 449 (2008) 40~43.
  10. Growth of TiO2 thin film by reactive RF magnetron sputtering using Oxygen Radical
    H. Ogawa, T. Higuchi, A. Nakamura, S. Tokita, D. Miyazaki, T. Hattori and T. Tsukamoto
    J. Alloys and Compounds 449 (2008) 375~378.

2007年

  1. Proton incorporation and defect chemistry of Yb-doped BaPrO3
    S. Mimuro, S. Shibako, Y. Oyama, K. Kobayashi, T. Higuchi, S. Shin and S. Yamaguchi
    Solid State Ionics 178 (2007) 641-647
  2. Optical Constants of β-FeSi2 Film on Si Substrate Obtained from Transmittance and Reflectance Data and Origin of Urbach Tail
    H. Kakemoto, T. Higuchi, H. Shibata, S. Wada, and T. Tsurumi
    Jpn. J. Appl. Phys. 46 (2007) 2405~2408.
  3. Structural and transport properties of beta-FeSi2 [100] oriented thin film on Si(001) ubstrate
    H. Kakemoto, T. Higuchi, H. Shibata, S. Wada and T. Tsurumi
    J. Crystal Growth 301-302 (2007) 400~403
  4. Unoccupied Electronic State at Low Temperature of SrTiO3-d Probed by Resonant Inverse Photoemission Spectroscopy
    T. Higuchi, T. Hattori and T. Tsukamoto
    Trans. Mater. Res. Soc. Jpn. 32 (2007) 95~98
  5. Optical constants of β-FeSi2 thin film on Si(001) substrate obtained by simultaneous equations from reflectance and transmittance spectra
    H. Kakemoto, T. Higuchi, H. Shibata, S. Wada and T. Tsurumi
    Thin Solid Films 515 (2007) 8154~8157.
  6. Structural and Ferroelectric Properties of Bi4Ti3O12/TiO2 Thin Films Prepared by Two-Dimensional RF Magnetron Sputtering
    H. Masaya, N. Inada, T. Higuchi, T. Hattori and T. Tsukamoto
    Trans. Mater. Res. Soc. Jpn. 32 (2007) 15~18.
  7. Polarization Dependence for Electronic Structure of Bi4Ti3O12 Single Crystal Probed by oft-X-Ray Raman Scattering
    T. Higuchi, T. Hattori and T. Tsukamoto
    Trans. Mater. Res. Soc. Jpn. 32 (2007) 19~22.
  8. Optical and Structural Properties of La2Ti2O7 Thin Films Prepared on SrTiO3 Substrates
    M. Wakui, T. Higuchi, M. Satake, T. Hattori and T. Tsukamoto
    Trans. Mater. Res. Soc. Jpn. 32 (2007) 83-86.
  9. Effect of TiO2 Anatase Layer for Bi4Ti3O12 Thin Film Prepared on La0.05Sr0.95TiO3 Substrate
    M. Konishi, T. Higuchi, T. Hattori, T. Tsukamoto
    Trans. Mater. Res. Soc. Jpn. 32 (2007) 23-26
  10. Ferroelectric and Electric Properties of Undoped-Bi4Ti3O12 Thin Film on TiO2 Anatase Layer
    T. Higuchi and T. Tsukamoto
    Ferroelectrics 347 (2006) 232~236.

2006年

  1. Anomalous Temperature Dependence of the Thermoelectric Power for Ln0.9Sr0.1FeO3-d (Ln=La, Nd)
    K. Kobayashi, M. Nishioka, K. Sato, T. Inoue, S. Hamakawa, T. Tsunoda, T. Higuchi and S. Yamaguchi
    Trans. Mater. Res. Soc. Jpn. 31 (2006) 903~906
  2. Ferroelectric and Structural Properties of Sr0.5Ba0.5Nb2O6 Thin Films on La0.05Sr0.95TiO3 Substrates
    Y. Ebina, T. Higuchi, T. Hattori and T. Tsukamoto
    Jpn. J. Appl. Phys. 45 (2006) 7300~7304.
  3. A Si/TiOx/Pt/TaOx electrode fabricated by sputtering for electrochemical ozone generation
    K. Kaneda, M. Ikematsu, K. Kitsuka, M. Iseki, H. Matsuura, T. Higuchi, T. Hattori, T. Tsukamoto and M. Yasuda
    Jpn. J. Appl. Phys. 45 (2006) 5154~5162.
  4. Electronic Structure in the Valence Band of (Pb,La)(Zr,Ti)O3 Thin films Probed by Soft-X-Ray Emission Spectroscopy
    T. Higuchi, T. Tsukamoto, T. Hattori, Y. Honda, S. Yokoyama and H. Funakubo
    Trans. Mater. Res. Soc. Jpn. 31 (2006) 23~26.
  5. Ferroelectric Properties of Bi4Ti3O12 Thin Films with TiO2 Anatase Layer on Pt/Ti/Si/SiO2 Substrates Prepared by MOCVD
    M. Konishi, T. Higuchi, Y. Hachisu, M. Nakamura, T. Hattori and T. Tsukamoto
    Trans. Mater. Res. Soc. Jpn. 31 (2006) 81~84.
  6. Effect of Oxygen Radical Irradiation of Bi4Ti3O12 Thin Films by Two-Dimensional RF Magnetron Sputtering
    N. Inada, T. Higuchi, H. Masaya, H. Ogawa, M. Iwasa, T. Hattori and T. Tsukamoto
    Trans. Mater. Res. Soc. Jpn. 31 (2006) 73~76.
  7. Electronic Structure in the Valence Band of C-axis Oriented Sr0.5Ba0.5Nb2O6 Thin Film on La0.05Sr0.95TiO3 Substrate
    Y. Ebina, T. Higuchi, T. Hattori and T. Tsukamoto
    Trans. Mater. Res. Soc. Jpn. 31 (2006) 15~18
  8. Ferroelectric and Structural Properties of Bi4Ti3O12 Thin Films with TiO2 Layer Prepared on Ir/Ti/SiO2/Si Substrates
    M. Saitoh, T. Higuchi, M. Konishi, T. Hattori, T. Tsukamoto
    Trans. Mater. Res. Soc. Jpn. 31 (2006) 77~80.
  9. Ferroelectricity and Electronic State of Bi4Ti3-xHfxO12 Ceramics
    T. Higuchi, S. Watanabe, Y. Ohno, K. Natsume, T. Hattori and T. Tsukamoto
    Trans. Mater. Res. Soc. Jpn. 31 (2006) 65~68.
  10. Effect of Sr Substitution for Ba2NaNb5O15 Thin Films Prepared by Pulsed Laser Deposition
    T. Yamasaki, T. Higuchi, T. Hattori and T. Tsukamoto
    Trans. Mater. Res. Soc. Jpn. 31 (2006) 19~22
  11. Ti/Pt/(Pt-TaOx) electrode fabricated by thermal decomposition and Si/Pt/TaOx fabricated by sputtering for ozone generation
    K. Kaneda, M. Ikematsu, D. Takaoka, M. Iseki, T. Higuchi, T. Hattori, T. Tsukamoto, M. Yasuda
    Jpn. J. Appl. Phys. 45 (2006) 6417~6419
  12. Hydrogen Separation using Proton-Conducting Perovskites
    H. Matsumoto, T. Shimura, H. Iwahara, T. Higuchi, K. Yashiro, A. Kaimai, T. Kawada, and J. Mizusaki
    J. Alloys and Compounds 408-412 (2006) 456~462

2005年

  1. Electronic Structure in the Valence Band of Nd-Substituted Bi4Ti3O12 Single Crystal Probed by Soft-X-Ray Emission Spectroscopy
    T. Higuchi, Y. Noguchi, T. Goto, M. Miyayama, S. Shin, K. Kaneda, T. Hattori and T. Tsukamoto
    Jpn. J. Appl. Phys. 44 (2005) L1491~1493.
  2. A novel electrode for ozone generation
    K. Kaneda, M. Ikematsu, D. Takaoka, M. Iseki, T. Higuchi, T. Hattori, T. Tsukamoto, M. Yasuda
    Chemical Letters 34 (2005) 1320~1321.
  3. Electronic Structure of (Pb,La)(Zr,Ti)O3 Thin Film Probed by Soft-X-ray Spectroscopy
    T. Higuchi, T. Tsukamoto, T. Hattori, Y. Honda, S. Yokoyama and H. Funakubo
    Jpn. J. Appl. Phys. 44 (2005) 6923~6926.
  4. Growth of Bi4Ti3-xZrxO12 Single Crystal by Floating Zone Method
    T. Higuchi, Y. Moriuchi, M. Satake, T. Hattori and T. Tsukamoto
    Trans. Mater. Res. Soc. Jpn. 30 (2005) 15~18.
  5. Ferroelectricity and Electronic State of (Sr,Ba)Nb2O6 Thin Film Prepared on La-doped SrTiO3 Substrate
    T. Higuchi, Y. Ebina, T. Hattori and T. Tsukamoto
    Trans. Mater. Res. Soc. Jpn. 30 (2005) 27~30.
  6. Ferroelectric Properties of Ba2NaNb5O15 Thin Films Prepared by Pulsed Laser Deposition
    T. Higuchi, N. Machida, T. Yamasaki, T. Kamei, T. Hattori and T. Tsukamoto
    Trans. Mater. Res. Soc. Jpn. 30 (2005) 23~26.
  7. Electronic Structure of Nd-doped Bi4Ti3O12 Single Crystal Probed by Soft-X-Ray Emission Spectroscopy
    T. Higuchi, T. Goto, Y. Noguchi, M. Miyayama, T. Hattori and T. Tsukamoto
    Trans. Mater. Res. Soc. Jpn. 30 (2005) 11~14.
  8. Electronic Structure of Protonic Conductor SrZr0.90M0.10O3 (M=Y3+, Sc3+) Probed by Soft-X-Ray Spectroscopy
    T. Higuchi, T. Tsukamoto, H. Matsumoto, T. Shimura, K. Yashiro, T. Kawada, J. Mizusaki, S. Shin and T. Hattori
    Solid State Ionics 176 (2005) 2435~2438.
  9. Electronic Structure of Protonic Conductor SrTi0.98Sc0.02O3 Probed by Soft-X-ray Spectroscopy
    T. Higuchi, S. Yamaguchi, S. Shin, T. Hattori and T. Tsukamoto
    Jpn. J. Appl. Phys. 43 (2005) 285~286.
  10. Electronic Structure of Protonic Conductor SrCeO3-SrZrO3 Mixed Thin Film
    T. Higuchi, T. Tsukamoto, N. Sata, S. Yamaguchi, S. Shin and T. Hattori
    Solid State Ionics 176 (2005) 2963~2966
  11. Electronic Structure of Protonic Conductor BaCe0.90Y0.10O3-d
    T. Higuchi, T. Tsukamoto, H. Matsumoto, T. Shimura, K. Yashiro, T. Kawada, J. Mizusaki, S. Shin, S. Yamaguchi and T. Hattori
    Solid State Ionics 176 (2005) 2967~2970
  12. Soft-X-Ray Raman Scattering of La1-xSrxTiO3
    T. Higuchi, T. Tsukamoto, T. Hattori, Y. Taguchi, Y. Tokura and S. Shin
    J. Electron Spectrosc. Relat. Phenom. 144-147 (2005) 853~856.
  13. Protonic-Electronic Mixed Conduction and Hydrogen Permeation in BaCe0.9-xY0.1RuxO3-α
    H. Matsumoto, T. Shimura, T. Higuchi, H. Tanaka, H. Iwahara, K. Katahira, T. Otake, T. Kudo, K. Yashiro, A. Kaimai, T. Kawada and J. Mizusaki
    Journal of Electrochemical Society 152 (2005) A488~492

2004年

  1. Valence-band photoemission study of β-ZrNCl and the quasi-two-dimensional
    superconductor NaxZrNCl
    T. Yokoya, T. Takeuchi, S. Tsuda, T. Kiss, T. Higuchi, S. Shin, K. Iizawa, S. Shamoto, T. Kajitani, and T. Takahashi
    Phys. Rev. B 70 (2004) 193103-1~4.
  2. Fabrication of CeO2 thin film on quartz glass and MgO(100) by electron beam evaporation
    N. Yamada, Y. Oyama, T. Higuchi and S. Yamaguchi
    Solid State Ionics 172 (2004) 293~297.
  3. Mixed Protonic-Electronic Conduction in Transition-Metal- Doped Perovskite-Type Oxides
    H. Matsumoto, T. Shimura, T. Higuchi, T. Otake, Y. Sasaki, K. Yashiro, A. Kaimai, T. Kawada and J. Mizusaki
    Electrochemistry, 72 (12) (2004) 861~864.
  4. Electronic Structure of Ce1-xNdxO2-δ Probed by Soft-X-Ray Spectroscopy
    T. Higuchi, S. Yamaguchi, K. Kobayashi, T. Hattori, A. Fukushima, S. Shin and T. Tsukamoto
    Jpn. J. Appl. Phys. 43 (2004) L1463~1465
  5. Thermoelectric Properties, Defect Structure, and Electronic Structure of Ln0.9Sr0.1FeO3-δ (Ln=La and Nd)
    K. Kobayashi, S. Yamaguchi, T. Higuchi, S. Shin, T. Tsukamoto and T. Tsunoda
    Electrochemistry 72 (12) (2004) 870~875
  6. Unoccupied Electronic State of SrTi1-xNbxO3 Observed by Inverse-PhotoemissionSpectroscopy
    T. Higuchi, Y. Tezuka, T. Hattori, S. Yamaguchi, S. Shin and T. Tsukamoto
    Jpn. J. Appl. Phys. 43 (2004) 7623~7624.
  7. Ferroelectric Properties of Bi4Ti3O12 Thin Films Prepared on TiO2 Anatase
    T. Higuchi, M. Nakamura,Y. Hachisu, M. Saitoh, T. Hattori and T. Tsukamoto
    Jpn. J. Appl. Phys. 43 (2004) 6585~6589.
  8. Structural and Ferroelectric Properties of Ba2NaNb5O15 Thin Films on La-doped SrTiO3 Substrates
    T. Kamei, T. Higuchi, M. Sogawa, Y. Masuda, T. Hattori and T. Tsukamoto
    Jpn. J. Appl. Phys. 43 (2004) 6617~6621.
  9. Mixed Protonic-Electronic Conduction in Transition-Metal-Doped Perovskite-Type Oxides
    H. Matsumoto, T. Ohtake, T. Kudo, Y. Sasaki, K. Yashiro, A. Kaimai, T. Kawada, J. Mizusaki, T. Shimura, T. Higuchi and K. Katahira
    Solid State Ionics (2004) 213~220.
  10. Thermoelectric Power of the Electronic Carriers in the Ionic Crystal
    K. Kobayashi, T. Tsunoda, T. Higuchi, and S. Yamaguchi
    Solid State Ionics (2004) 979~984
  11. Electronic Structure of Protonic Conductor BaCe0.90Y0.10O3-δ Probed by Soft-X-Ray Spectroscopy
    T. Higuchi, H. Matsumoto, T. Simura, K. Yashiro, T. Kawada, J. Mizusaki, S. Shin and T. Tsukamoto
    Jpn. J. Appl. Phys. 43 (2004) L731~734.
  12. Electronic Structure in the Band Gap Region of Protonic Conductor SrZr0.90Y0.10O3-δ
    T. Higuchi, H. Matsumoto, T. Simura, K. Yashiro, T. Kawada, J. Mizusaki, S. Shin and T. Tsukamoto
    Jpn. J. Appl. Phys. 43 (2004) 5419~5420.
  13. Band Structure of Sr0.5Ba0.5Nb2O6 Thin Film Probed by Soft-X-Ray Emission Spectroscopy
    N. Ohtake, T. Higuchi, K. Ando, A. Fukushima, S. Shin and T. Tsukamoto
    Jpn. J. Appl. Phys. 43 (2004) 7627~7628.
  14. Electronic Structure for the Metal-Insulator Transition in La1-xSrxTiO3 Probed by Resonant Soft-X-Ray Emission Spectroscopy
    T. Higuchi, T. Tsukamoto, Y. Taguchi, Y. Tokura and S. Shin
    Physica B 351 (2004) 310~312.
  15. Orientation Control of Bi4Ti3O12 Thin Film by Two-Dimensional RF magnetron Sputtering
    T. Higuchi, M. Iwasa, K. Kudoh and T. Tsukamoto
    Trans. Mater. Res. Soc. Jpn. 29 (2004) 1121~1124.
  16. Ferroelectricity of C-axis Oriented Ba2NaNb5O15 Thin Film on La-doped SrTiO3 Prepared by Pulsed Laser Deposition
    T. Higuchi, M. Sogawa, T. Kamei and T. Tsukamoto
    Trans. Mater. Res. Soc. Jpn. 29 (2004) 1117~1120.
  17. Effect of Buffer layer of Undoped Bi4Ti3O12 Thin Films Prepared by Metalorganic Chemical Vapor Deposition
    T. Higuchi, Y. Hachisu, M. Nakamura and T. Tsukamoto
    Trans. Mater. Res. Soc. Jpn. 29 (2004) 1109~1112.
  18. Ferroelectricity and Electronic Structure of Sm-doped SrBi2Ta2O9 Ceramics
    T. Higuchi, S. Watanabe, N. Ohtake and T. Tsukamoto
    Trans. Mater. Res. Soc. Jpn. 29 (2004) 1113~1116.
  19. Unoccupied Electronic State of Delafossite-Type PdCoO2 Single Crystal Probed by Inverse Photoemission Spectroscopy
    T. Higuchi, M. Hasegawa, M. Tanaka, H. Takei, S. Shin and T. Tsukamoto
    Jpn. J. Appl. Phys. 43 (2004) 699~700.
  20. Preparation and Characterization of a- and b-Axes-Oriented Bi4Ti3O12 Thin Films Using TiO2 Anataze Buffer Layer
    M. Nakamura, T. Higuchi, Y. Hachisu and T. Tsukamoto
    Jpn. J. Appl. Phys. 43 (2004) 1449~1453.
  21. Tunneling Current Through the Surface Layer Formed on The Nb-doped SrTiO3 Single Crystal
    L. Q. Han, P. P. Chen, C. J. Zhong, T. Higuchi, A. Kaimai, K. Yashiro, Y. Nigara, T. Kawada, and J. Mizusaki
    Solid State Ionics 175 (2004) 431~435.
  22. Electronic structure of protonic conductor SrCeO3 by soft-X-ray spectroscopy
    T. Higuchi, T. Tsukamoto, N. Sata, T. Hattori, S. Yamaguchi and S. Shin
    Solid State Ionics (2004) 175 (2004) 549~552.

2003年

  1. Evidence of O-H bond in the Bulk State of Protonic Conductor Y-doped SrCeO3 by Soft-X-Ray Spectroscopy
    T. Higuchi, S. Yamaguchi, N. Sata, S. Shin and T. Tsukamoto
    Jpn. J. Appl. Phys. 42 (2003) L1265~1267.
  2. Preparation and Characterization of Highly C-Axis Oriented Ba2NaNb5O15 Thin Film on La0.05Sr0.95TiO3 Substrate
    M. Sogawa, T. Higuchi, T. Kamei and T. Tsukamoto
    Jpn. J. Appl. Phys. 42 (2003) 6990~6991.
  3. Band Structure of TiO2-Doped Yttria-Stabilized Zirconia Probed by Soft-X-Ray Spectroscopy
    T. Higuchi, K. Kobayashi, S. Yamaguchi, A. Fukushima, S. Shin and T. Tsukamoto
    Jpn. J. Appl. Phys. 42 (2003) L941 - L943
  4. Electronic Structures of Bi4-xLaxTi3O12 and Bi4ZrxTi3-xO12 Single Crystals by Soft-X-Ray Spectroscopy
    T. Higuchi, Y. Moriuchi, Y. Noguchi, M. Miyayama, S. Shin and T. Tsukamoto
    Jpn. J. Appl. Phys. 42 (2003) 6226～6229
  5. Effect of Carrier Gas of Bi4Ti3O12 Thin Film Prepared by MOCVD Method
    M. Nakamura, T. Higuchi and T. Tsukamoto
    Jpn. J. Appl. Phys. 42 (2003) 5969~5972
  6. Unoccupied Electronic State of Lightly La-Doped SrTiO3 Observed by Inverse-Photoemission Spectroscopy
    D. Baba, T. Higuchi, H. Kakemoto, Y. Tokura, S. Shin and T. Tsukamoto
    Jpn. J. Appl. Phys. 42 (2003) L 837-839.
  7. Electronic Structure of Delafossite-Type Oxide PtCoO2 by Resonant-Photoemission Spectroscopy
    T. Higuchi, D. Baba, Y. Yokoyama, M. Hasegawa, H. Takei, A. Fukushima, S. Shin and T. Tsukamoto
    Jpn. J. Appl. Phys. 42 (2003) 5698～5699
  8. Electronic structure in the band gap of protonic conductor Sr[CexZr1-x]0.95Yb0.05O3 thin film
    T. Higuchi, N. Sata, T. Hattori, S. Shin and T. Tsukamoto
    Jpn. J. Appl. Phys. 42 (2003) 5696～5697
  9. On-site Coulomb energy vs. crystal-field splitting for insulator-metal transition of La1-xSrxTiO3
    T. Higuchi, D. Baba, T. Takeuchi, T. Tsukamoto, Y. Taguchi, Y. Tokura, A. Chainani, and S. Shin
    Phys. Rev. B 68 (2003) 104420-1～5
  10. Bulk Electronic State of SrTiO3-d Probed by Soft-X-ray Emission Spectroscopy
    T. Higuchi, Y. Yokoyama, S. Yamaguchi, A. Fukushima, S. Shin and T. Tsukamoto
    Jpn. J. Appl. Phys. 42 (2003) L592~594.
  11. Effect of Thermal Treatment of Undoped Bi4Ti3O12 Thin Film Prepared by Metalorganic Vapor Deposition
    M. Nakamura, T. Higuchi, and T. Tsukamoto
    Jpn. J. Appl. Phys. 42 (2003) 5687～5691
  12. Ce-O Hybridization Effect of Protonic Conductor SrCe1-xYxO3-d by Resonant-Photoemission Spectroscopy
    T. Higuchi, T. Tsukamoto, S. Yamaguchi, N. Sata, M. Ishigame and S. Shin
    Jpn. J. Appl. Phys. 42 (2003) 3526~3527.
  13. Electronic structures in the bulk and surface states of protonic conductor CaZrO3 by soft-X-ray spectroscopy
    T. Higuchi, S. Yamaguchi, K. Kobayashi, S. Shin and T. Tsukamoto
    Solid State Ionics 162-163 (2003) 121-125.
  14. Optical Absorption Spectra of Protonic Conductor CaZrO3
    T. Higuchi, T. Tsukamoto, N. Sata, M. Ishigame, S. Yamaguchi and S. Shin
    Jpn. J. Appl. Phys. 42 (2003) 1331~1332.
  15. Observation of Acceptor level of p-type SrTiO3 by high-resolution X-ray absorption spectroscopy
    T. Higuchi, T. Tsukamoto, K. Kobayashi, N. Sata, M. Ishigame, S. Yamaguchi, S. Shin
    Nucl. Instrum. & Methods in Phys. Res. 199 (2003) 255-259.
  16. Electron correlation energy of LaxSr1-xTiO3 by high-resolution soft-X-ray emission spectroscopy
    T. Higuchi, T. Takeuchi, T. Tsukamoto, Y. Harada, Y. Taguchi, Y. Tokura, S. Shin
    Nucl. Instrum. & Methods in Phys. Res. 199 (2003) 386-390
  17. Electronic structure of β-FeSi2 by MEM and photoemission spectroscopy methods
    H. Kakemoto, T. Higuchi, Y. Makita, T. Tsukamoto, S. Shin, S. Wada, T. Tsurumi
    Nucl. Instrum. & Methods in Phys. Res. 199 (2003) 411-415.

2002年

  1. Electronic Structures of Bi4Ti3O12 Thin Film and Single Crystal by Resonant Soft-X-Ray Emission Spectroscopy
    T. Higuchi, K. Kudoh, T. Takeuchi, Y. Masuda, Y. Harada, S. Shin and T. Tsukamoto
    Jpn. J. Appl. Phys. 41 (2002) 7195-7197.
  2. Protonic Conduction in the Single Crystal of Sc-doped SrZrO3
    T. Higuchi, T. Tsukamoto, S. Yamaguchi, N. Sata, K. Hiramoto, M. Ishigame, and S. Shin
    Jpn. J. Appl. Phys. 41 (2002) 6440-6442.
  3. Ti-O hybridization effect of lightly La-doped SrTiO3 by resonant-photoemission spectroscopy
    T. Higuchi, T. Tsukamoto, S. Yamaguchi, Y. Tezuka and S. Shin
    Jpn. J. Appl. Phys. 41 (2002) 5674-5675.
  4. Electronic structure in the bulk state of protonic conductor CaZrO3 by resonant soft- X -ray emission spectroscopy
    T. Higuchi, S. Yamaguchi, K. Kobayashi, T. Takeuchi, S. Shin and T. Tsukamoto
    Jpn. J. Appl. Phys. 41 (2002) L938-940.
  5. 68. Unoccupied electronic structure in the surface state of lightly-doped SrTiO3 by resonant-inverse photoemisison spectroscopy
    T. Higuchi, S. Nozawa, T. Tsukamoto, R. Eguchi, H. Ishii, Y. Tezuka, S. Yamguchi, K. Kanai, and S. Shin
    Phys. Rev. B 66 (2002) 153105-1~4.
  6. Electronic structure of black SmS. I. 4d-4f resonance and angle-integrated valence-band photoemission spectroscopy
    A. Chainani, H. Kumigashira, T. Ito, T. Sato, T. Takahashi, T. Yokoya, T. Higuchi, T. Takeuchi, S. Shin and N. K. Sato
    Phys. Rev. B 65 (2002) 155201-1~7
  7. Protonic conduction in the single crystal of SrTi1-xScxO3
    T. Higuchi, T. Tsukamoto, N. Sata, K. Hiramoto, M. Ishigame and S. Shin
    Jpn. J. Appl. Phys. 41 (2002) 2120-2121.
  8. Growth of Bi4Ti3O12 Thin Film by Two-dimension RF magnetron sputtering with Bi2O3 and TiO2 Targets
    M. Tanaka, T. Higuchi, K. Kudoh, and T. Tsukamoto
    Jpn. J. Appl. Phys. 41 (2002) 1536-1537.
  9. Direct evidence of p-type SrTiO3 by high-resolution X-ray absorption spectroscopy
    T. Higuchi, T. Tsukamoto, S. Yamaguchi, K. Hiramoto, N. Sata, M. Ishigame, Y. Ishiwata, and S. Shin
    Phys. Rev. B 65 (2002) 033201-1~4.
  10. Electronic structure of 4d transition metal compound ZrF4 by resonant-photoemission spectroscopy
    T. Higuchi, T. Tsukamoto, S. Yamaguchi, Y. Tezuka, and S. Shin
    Jpn. J. Appl. Phys. 41 (2002) 2090-2093.
  11. Electronic structures of Protonic conductors SrTiO3 and SrCeO3 by O 1s x-ray absorption spectroscopy
    T. Higuchi, T. Tsukamoto, K. Kobayashi, K. Hiramoto, N. Sata, M. Ishigame, S. Yamaguchi, and S. Shin
    Solid State Ionics 154-155 (2002)735-739.

2001年

  1. Electronic structure of Bi4Ti3O12 thin film by soft-x-ray emission spectroscopy
    T. Higuchi, M. Tanaka, K. Kudoh, T. Takeuchi, Y. Harada, S. Shin and T. Tsukamoto
    Jpn. J. Appl. Phys. 40 (2001) 5803-5805.
  2. Electronic Structure of Delafossite-Type Metallic Oxide PdCoO2
    M. Hasegawa, T. Higuchi, M. Tanaka, T. Tsukamoto, S. Shin and H. Takei
    Materials Transactions 42 (2001) 961-964.
  3. Ti-O Hybridization Effect of Nb-doped SrTiO3 by Resonant-Photoemission Spectroscopy
    T. Higuchi, T. Tsukamoto, S. Yamaguchi, Y. Tezuka, and S. Shin
    Jpn. J. Appl. Phys. 40 (2001) L201-202
  4. Protonic Conduction in the Single Crystals of SrZr0.95M0.05O3 (M=Y, Sc, Yb, Er)
    T. Higuchi, T. Tsukamoto, N. Sata, K. Hiramoto, M. Ishigame, and S. Shin
    Jpn. J. Appl. Phys. 40 (2001) 4162-4163.

2000年

  1. Hole state and defect structure of protonic conductor SrTiO3 observed by high-resolution X-ray absorption spectroscopy
    T. Higuchi, T. Tsukamoto, N. Sata, M. Ishigame, K. Kobayashi, S. Yamaguchi, Y. Ishiwata, T. Yokoya, M. Fujisawa and S. Shin
    Solid State Ionics 136-137 (2000) 261-264.
  2. Electronic structure in the band gap of lightly-doped SrTiO3 by high-resolution x-ray absorption spectroscopy
    T. Higuchi, T. Tsukamoto, K. Kobayashi, S. Yamaguchi, Y. Ishiwata, T. Yokoya, M. Fujisawa and S. Shin
    Phys. Rev. B 61 (2000) 12860-12863.
  3. Soft X-ray emission study on LaXSr1-XTiO3
    T. Higuchi, T. Tsukamoto, M. Watanabe, M. M. Grush, T. A. Callcott, R. C. Perera, D. L. Ederer, Y. Tokura, Y. Harada, Y. Tezuka and S. Shin
    Physica B 281&282 (2000) 615-616.
  4. Photoemission study on protonic conductor CaZrO3: Evidence of the exchange mechanism of hole and proton
    T. Higuchi, T. Tsukamoto, K. Kobayashi, S. Yamaguchi, Y. Tezuka and S. Shin
    Jpn. J. Appl. Phys. 39 (2000) L 133-136.
  5. High resolution soft x-ray absorption spectroscopy for the chemical state analysis of Mn
    J. Kawai, Y. Mizutani, T. Sugimura, M. Sai, T. Higuchi, Y. Harada, Y. Ishiwata, A. Fukushima, M. Fujisawa, M. Watanabe, K. Maeda, S. Shin, Y. Gohshi
    Spectrochimica Acta B 55 (2000) 1385-1395.
  6. Electronic transport properties and electronic structure of TiO2 doped YSZ K. Kobayashi, S. Yamaguchi, T. Higuchi, S. Shin and Y. Iguchi
    Solid State Ionics 135 (2000) 643-651
  7. Basicity and hydroxyl capacity of proton conducting perovskites
    S. Yamaguchi, K. Nakamura, T. Higuchi, S. Shin and Y. Iguchi
    Solid State Ionics 136-137 (2000) 191-195.
  8. Electronic transport properties and electronic structure of InO1.5-doped CaZrO3
    S. Yamaguchi, K. Kobayashi, T. Higuchi, S. Shin and Y. Iguchi
    Solid State Ionics 136-137 (2000) 305-311.
  9. Magnetic property and electronic structure of β-FeSi2
    H. Kakemoto, T. Higuchi, Y. Makita, S. Sakuragi, Y. Kino, T. Tsukamoto and S. Shin
    Physica B 281&282 (2000) 638-640.

1999年

  1. Crystal field splitting and the on-site Coulomb energy of LaXSr1-XTiO3 from resonant soft X-ray emission spectroscopy
    T. Higuchi, T. Tsukamoto, M. Watanabe, M. M. Grush, T. A. Callcott, R. C. Perera, D. L. Ederer, Y. Tokura, Y. Harada, Y. Tezuka and S. Shin
    Phys. Rev. B 60 (1999) 7711-7714.
  2. Ti-O hybridization effect on ferroelectric phase transition of BaTiO3
    T. Higuchi, T. Tsukamoto, K. Oka, T. Yokoya, Y. Tezuka and S. Shin
    Jpn. J. Appl. Phys. 9B-38 (1999) 5667-5669.

1998年

  1. Electronic structure of p-type SrTiO3 by photoemission spectroscopy
    T. Higuchi, T. Tsukamoto, N. Sata, M. Ishigame, Y. Tezuka and S. Shin
    Phys. Rev. B 57 (1998) 6978-6983.
  2. Photoemission study on protonic conductor p-type SrTiO3
    T. Higuchi, T. Tsukamoto, N. Sata, M. Ishigame, Y. Tezuka and S. Shin
    Solid State Ionics 108 (1998) 349-353.
  3. Photoemission study on PdCoO2
    T. Higuchi, T. Tsukamoto, M. Tanaka, H. Ishii, K. Kanai, Y. Tezuka, S. Shin and H. Takei
    J. Electron Spectrosc. Relat. Phenom. 92 (1998) 71-74.
  4. Origin of the metallic conductivity in PdCoO2 with delafossite structure
    M. Tanaka, M. Hasegawa, T. Higuchi, T. Tsukamoto, Y. Tezuka, S. Shin and H. Takei
    Physica B (Condensed Matter) 245 (1998) 157-163.

解説・著書

  1. ペロブスカイト型誘電材料の軟X線分光研究から見えてきた新たな材料設計指針と燃料電池応用の可能性
    樋口透
    理大　科学フォーラム -科学教養講座-（2007）
  2. ペロブスカイト型プロトン導電体の分光学的解析
    樋口透、塚本桓世、山口周、辛埴、服部武志
    マテリアルインテグレーション No.7, vol.18 (2005) 28~36.
  3. Electronic Structure of Perovskite-type Protonic Condcutor Probed by Soft-X-Ray Spectroscopy
    T. Higuchi
    Physics of Solid State Ionics (2005) 1~14.
  4. プロトン導電体CaZrO3の光電子分光: プロトンとホールの交換メカニズムの証拠
    樋口透, 塚本桓世, 小林清, 山口周, 手塚泰久, 辛埴
    応用物理　第69巻第04号 (2000)
  5. 軟X線分光によるCarrier-doped SrTiO3の電子構造
    樋口透
    放射光　第13巻第4号　(2000) 712-714.
  6. ナノイオニクス ―最新技術とその展望―
    山口周(監修)、樋口透(執筆分担)
    (株)シーエムシー出版　(2008)

査読無し論文

  1. Electronic Structure of VO2 Thin Film with Lattice Distortion　Probed by Soft-X-Ray Spectroscopy
    Tohru Higuchi, Takaaki Suetsugu, Enju Sakai, Masaki Kobayashi and Hiroshi Kumigashira
    Photon Factory Activity Report 2013 ＃31（2014）B
  2. Bulk Electronic Structure of BiFe1-xMx03 (M=Mn and Co) Thin Films by Soft-x-Ray Spectroscopy
    T.Higuchi, H.Naganuma, J.Miura, Y.Inoue,and S.Okamura
    Activity Report 2011 of SRL-ISSP(2012)9-10
  3. Electronic structure and auto-ionization process of ion-electron mixed-conductor
    S.Yamaguchi, T.Higuchi, S.Miyoshi, and D.Y.Kim
    Activity Report 2011 of SRL-ISSP(2012)17-18
  4. A study on the electronic structure of proton conducting ABO3 single crystal
    H. Yugami, Y. Nagao, J. Liu, T. Higuchi, F. Iguchi and N. Sata
    ACTIVITY REPORT OF SYNCHRTRON RADIATION (2009) 20-21
  5. Electronic structure of La1-xSrxScO3 by X-ray absorption spectroscoopy
    T. Higuchi
    ACTIVITY REPORT OF SYNCHRTRON RADIATION (2009) 10-11
  6. Electronic structure of SrZrO3 thin films fabricated by a novel PLD process
    N. Sata, S. Tamura, Y. NOhara, Y. Nagao, T. Higuchi, A. Miura, M. Sakuma, F. Iguchi and H. Yugami
    ACTIVITY REPORT OF SYNCHRTRON RADIATION (2009) 8-9
  7. Electronic structure of multiferroic BiFeO3 by soft-X-ray spectroscopy]
    T. Higuchi, W. Sakamoto, T. Yogo and T. Hattori
    Activity Report of Synchrotron Radiation Laboratory (2008) 42-43
  8. Enchancedtransport properties of beta-FeSi2 in b-c plane observed from [100] oriented thin film on Si(100) substrate.
    H.Kakemoto, T.Higuchi, S.Wada, T.Tsurumi
    Proc. 6th International Conference on Materials for Microelectronics and Nanoengineering 1 (2006)85-89
  9. Electronic structure of SrTi1-xNbxO3 by inverse photoemission spectroscopy
    T. Higuchi, T. Tsukamoto, T. Hattori, S. Yamaguchi and S. Shin
    Activity Report of ISSP, University of Tokyo (2005)
  10. Ferroelectric properties of Ba2-xSrxNaNb5O15 Thin Films Prepared by Pulsed Laser Deposition
    T. Yamasaki, T. Higuchi, T. Hattori and T. Tsukamoto
    Proc. 1th International Symposium on Functional Materials (2005) 605~610.
  11. Structural and Ferroelectric Properties of Bi4Ti3O12 Thin Films on TiO2 Anatase Layer Prepared by Metalorganic Vapor Deposition
    T. Higuchi, Y. Saitoh, M. Konishi, Y. Hachisu, M. Nakamura, T. Hattori and T. Tsukamoto
    Proc. 1th International Symposium on Functional Materials (2005) 611~616.
  12. Growth of TiO2 Thin Film by Reactive RF Magnetron Sputtering Using Oxygen Radical
    H. Ogawa, T. Higuchi, A. Nakamura, S. Tokita, D. Miyazaki, T. Hattori and T. Tsukamoto
    Proc. 1th International Symposium on Functional Materials (2005) 718~723.
  13. Unoccupied Electronic Structure of Lightly-Doped SrTiO3 by Resonant-Inverse Photoemission Spectroscopy
    T. Higuchi and S. Shin
    Activity Report of ISSP, University of Tokyo (2004) 80～81
  14. Structural Properties of Zr-doped Bi4Ti3O12 Ceramic and Single Crystal
    Y. Moriuchi, T. Higuchi and T. Tsukamoto
    Extended Abstarct of 11th US-Japan Seminar on Dielectric and Piezoelectric Ceramics (2003) 122-125
  15. Unoccupied electronic structure in the surface state of lightly-doped SrTiO3 by resonant-inverse photoemission spectroscopy
    T. Higuchi, S. Nozawa, T. Tsukamoto, R. Eguchi, H. Ishii, Y. Tezuka, K. Kanai, S. Shin
    Technical Report of ISSP (2002) 3966.
  16. Electronic Structure of Doped Mott-Insulator LaTiO3 by Soft-X-Ray Emission Spectroscopy
    T. Higuchi, T. Tsukamoto, Y. Taguchi, Y. Tokura, A. Chainani and S. Shin
    Activity Report of Synchrotron Radiation Laboratory (2002) 86～87.
  17. Effect of Heat Treatment on Electric Properties of Bi4Ti3O12 Thin Films by Two- Dimensional RF Magnetron Sputtering
    K. Kudoh, T. Higuchi, M. Iwasa, M. Hosomizu and T. Tsukamoto
    Proc. Inter. Symp. Appl. Ferro. (ISAF) XIII (2002) 167-170.
  18. Electron correlation energy near the Mott transition of LaxSr1-xTiO3 by soft-X-ray emission spectroscopy
    T. Higuchi, T. Takeuchi, T. Tsukamoto, Y. Harada, M. Watanabe, Y. Taguchi, Y. Tokura, and S. Shin
    Activity Report at Photon Factory (2002) 150.
  19. Low-Temperature Preparation of Ferrolectric Ba2NaNb5O15 Thin Films by Pulsed Laser Deposition
    K. Ohnuki, T. Higuchi, M. Takayasu, M. Sogawa and T. Tsukamoto
    Proc. Inter. Symp. Appl. Ferro. (ISAF) XIII (2002) 171-174.
  20. High-resolution soft-X-ray absorption study on p-type SrTiO3
    T. Higuchi, T. Tsukamoto, K. Kobayashi, S. Yamaguchi, Y. Ishiwata, N. Sata, K. Hiramoto, M. Ishigame, and S. Shin
    Technical Report of ISSP (2001) 3475.
  21. Growth of Bi4Ti3O12 Thin Films by RF Magnetron Sputtering Method
    K. Kudoh, T. Higuchi, M. Tanaka and T. Tsukamoto
    Proc. Ferroelectric Random Access Memories (2001) 32-33
  22. Electronic structure of 4d transition metal compound ZrF4 by resonant-photoemission spectroscopy
    T. Higuchi, T. Tsukamoto, Y. Tezuka, and S. Shin
    Technical Report of ISSP (2001) 3634.
  23. Electronic structure of Bi4Ti3O12 thin film by soft-x-ray emission spectroscopy
    T. Higuchi, M. Tanaka, K. Kudoh, T. Takeuchi, Y. Harada, S. Shin and T. Tsukamoto
    Technical Report of ISSP (2001) 3633.
  24. Electronic structure of b-FeSi2
    T. Higuchi, H. Kakemoto, Y. Makita, S. Shin and T. Tsukamoto
    Activity Report at Photon Factory (2001) 320.
  25. Hole state and Defect Structure of Protonic Conductor SrTiO3 Observed by High-Resolution X-Ray Absorption Spectroscopy
    T. Higuchi, T. Tsukamoto, N. Sata, M. Ishigame, K. Kobayashi, S. Yamaguchi, Y. Ishiwata, T. Yokoya, M. Fujisawa and S. Shin
    Technical Report of ISSP (1999) 3494.
  26. 1Observation of the Crystal Field Splitting and the On-Site Coulomb Energy of LaxSr1-xTiO3 from Resonant Soft X-Ray Emission Spectroscopy
    T. Higuchi, T. Tsukamoto, M. Watanabe, M. M. Grush, T. A. Callcott, R. C. C. Perera, D. L. Ederer, Y. Tokura, Y. Harada, Y. Tezuka and S. Shin
    Technical Report of ISSP (1999) 3495.
  27. Ti-O Hybridization Effect for Ferroelectric Phase Transition of BaTiO3
    T. Higuchi, T. Tsukamoto, K. Oka, T. Yokoya, Y. Tezuka and S. Shin
    Technical Report of ISSP (1999) 3493.
  28. Electronic structure of Antiferromagnetic (La1-Z, NdZ)0.46Sr0.54MnO3
    T. Takeuchi, K. Soda, T. Takeichi, M. Kato, T. Nomura, K. Morita, U. Mizutani, Y. Moritomo, T. Higuchi, and S. Shin
    Technical Report of ISSP, Ser.A (1998) 62.
  29. Soft X-ray absorption spectroscopy for chemical state analysis of Mn
    J. Kawai, Y. Mizutani, M. Sai, T. Higuchi, Y. Harada, Y. Ishiwata, M. Watanabe, S. Shin and Y. Gohshi
    Technical Report of ISSP, Ser.A (1998) 52.
  30. Photoluminescence of AlGaAs-GaAs-AlGaAs Quantum structures under Al 2p core excitation
    K. Kobayashi, T. Ota, H. Nakashima, Y. Ishiwata, T. Higuchi and S. Shin
    Technical Report of ISSP, Ser.A (1998) 48.
  31. Soft-X-ray emission study on LaxSr1-xTiO3
    T. Higuchi, T. Tsukamoto, M. Watanabe, ,M. M. Grush, T. A. Callcott, R. C. C. Perera, D. L. Ederer, Y. Tokura, Y. Harada, Y. Tezuka, and S. Shin
    Advanced Light Source Compendium of Abstract (1999).
  32. Photoemission Study on PdCoO2
    T. Higuchi, T. Tsukamoto, M. Tanaka, H. Takei, Y. Ishiwata, H. Ishii, K. Kanai, Y. Tezuka and S. Shin
    Technical Report of ISSP (1998) 3349.
  33. Photoemission Study on Protonic Conductor p-type SrTiO3
    T. Higuchi, T. Tsukamoto, N. Sata, M. Ishigame, Y. Tezuka and S. Shin
    Technical Report of ISSP (1998) 3347.
  34. Electronic Structure of P-type SrTiO3 by Photoemission Spectroscopy
    T. Higuchi, T. Tsukamoto, N. Sata, M. Ishigame, Y. Tezuka and S. Shin
    Technical Report of ISSP (1998) 3348.
  35. Photoemission, Absorption, and Soft-x-ray emission studies on n- and p-type SrTiO3
    T. Higuchi, M. Fujisawa and S. Shin
    Activity Report at Photon Factory (1997) 85.
  36. Absorption spectra of acceptor-doped SrZrO3 and SrCeO3 thin firms and their superlattice
    N. Sata, T. Higuchi, S. Shin and M. Ishigame
    Technical Report of ISSP (1996) 16.