Updated on 2024/04/04

写真a

 
ISHIBASHI Hiroki
 
Organization
Graduate School of Science Department of Physics Associate Professor
School of Science Department of Physics
Title
Associate Professor
Affiliation
Institute of Science
Affiliation campus
Nakamozu Campus

Position

  • Graduate School of Science Department of Physics 

    Associate Professor  2022.04 - Now

  • School of Science Department of Physics 

    Associate Professor  2022.04 - Now

Degree

  • 博士（理学） （ Others ）

Professional Memberships

  • 日本放射光学会

    1998.04 - Now   Domestic

  • 日本結晶学会

    1997.04 - Now   Domestic

  • 日本物理学会

    1992.04 - Now   Domestic

Papers

  • Irreversible Structural Phase Transition in [(9‐triptycylammonium) ([18]crown‐6)][Ni(dmit)2]: Origin and Effects on Electrical and Magnetic Properties Reviewed

    Jun Manabe, Nagisa Sako, Mizuki Ito, Masaru Fujibayashi, Chisato Kato, Goulven Cosquer, Katsuya Inoue, Kiyonori Takahashi, Takayoshi Nakamura, Tomoyuki Akutagawa, Seiya Shimono, Hiroki Ishibashi, Yoshiki Kubota, Sadafumi Nishihara

    European Journal of Inorganic Chemistry   26 ( 34 )   e202300449 - e202300449   2023.08（ ISSN:1434-1948 ） （ eISSN:1099-0682 ）

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    Publishing type：Research paper (scientific journal)   International / domestic magazine：International journal  

    Materials exhibiting irreversible phase transitions, leading to changes in their properties, have a potential for novel application in electronic components such as a non‐rewritable high‐security memory. Here, we focused on the two salts, [(9‐triptycylammonium)([18]crown‐6)][Ni(dmit)2] (1) and [(9‐triptycylammonium)([15]crown‐5)][Ni(dmit)2] (2), which featured 2D sheet structures with alternately stacked cation and anion layers. Both salts exhibit similar cation arrangements, however, their anion arrangements differ significantly. The temperature‐dependent magnetic susceptibilities of 1 and 2 were well reproduced by the alternating chain model (JAC1/kB = −306(8), JAC2/kB = −239(3) K) and the Curie‐Weiss model (θ = −3.9(1) K), respectively. 1 experience a reversible phase transition around 40‐60 K, causing anomalies in magnetic behavior. Moreover, an irreversible single‐crystal‐to‐single‐crystal phase transition to 1’ undergo at ~381 K, inducing a rearrangement of [Ni(dmit)2]− anions and a resistivity decrease from 6.5 × 106 to 6.5 × 102 Ω cm. The susceptibility curve of 1’ was reproduced by a combination of the Curie‐Weiss and dimer models (Jdimer/kB = −407(5), θ = −26.7(5) K). The irreversible transition of 1 is the first example for such supramolecule and [Ni(dmit)2]− system to our knowledge, in opening potential new‐type materials.

    DOI： 10.1002/ejic.202300449

  • Nanoscale coexistence of polar-nonpolar domains underlying oxygen storage properties in Ho(Mn, Ti) O3+δ Reviewed

    Hiroshi Nakajima, Kento Uchihashi, Hirofumi Tsukasaki, Daisuke Morikawa, Hiroyuki Tanaka, Tomohiro Furukawa, Kosuke Kurushima, Jun Yamasaki, Hiroki Ishibashi, Yoshiki Kubota, Atsushi Sakuda, Akitoshi Hayashi, Shigeo Mori

    Physical Review Research   5 ( 2 )   023203 - 023203   2023.04（ ISSN:26431564 ）

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    Publishing type：Research paper (scientific journal)   International / domestic magazine：International journal  

    DOI： 10.1103/PhysRevResearch.5.023203

  • Time-resolved in-situ X-ray diffraction and crystal structure analysis of porous coordination polymer CPL-1 in CO2 adsorption Reviewed

    Hirotaka Ashitani, Shogo Kawaguchi, Hiromichi Furukawa, Hiroki Ishibashi, Kenichi Otake, Susumu Kitagawa, Yoshiki Kubota

    Journal of Solid State Chemistry   319   123796 - 123796   2023.03（ ISSN:0022-4596 ）

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    Publishing type：Research paper (scientific journal)   International / domestic magazine：International journal  

    DOI： 10.1016/j.jssc.2022.123796

  • Metal-insulator transition in CuIr2S4 observed by CuKα resonant x-ray emission spectroscopy Reviewed

    Hitoshi Sato, Takuma Matsumoto, Kazuhiro Maeda, Yukihiro Taguchi, Naomi Kawamura, Hiroki Ishibashi

    Physical Review B   106 ( 15 )   155151 - 155151   2022.10（ ISSN:24699950 ）

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    Publishing type：Research paper (scientific journal)   International / domestic magazine：International journal  

    DOI： 10.1103/PhysRevB.106.155151

  • Phase diagram and crystal structure of Ti-doped HoMnO3 by high-resolution synchrotron powder diffraction Reviewed

    Hiroki Ishibashi, Fernando Cubillas, Kento Uchihashi, Hirofumi Tsukasaki, Shogo Kawaguchi, Toshiaki Ina, Francisco Brown, Noboru Kimizuka, Shigeo Mori, Yoshiki Kubota

    Journal of Solid State Chemistry   312   123273   2022.08（ ISSN:0022-4596 ）

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    Authorship：Lead author,　Corresponding author   Publishing type：Research paper (scientific journal)   International / domestic magazine：International journal  

    DOI： 10.1016/j.jssc.2022.123273

  • Structural phase transitions in cobalt oxyfluoride Co3Sb4O6F4 observed by high-resolution synchrotron and neutron diffraction Reviewed

    S. Shimono, H. Ishibashi, Y. Nagayoshi, H. Ikeno, S. Kawaguchi, M. Hagihala, S. Torii, T. Kamiyama, K. Ichihashi, S. Nishihara, K. Inoue, Y. Ishii, Y. Kubota

    Journal of Physics and Chemistry of Solids 雑誌   163   2022.04

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    Kind of work：Joint Work  

  • Magnetizing lead-free halide double perovskites Reviewed

    W. Ning, J. Bao, Y. Puttisong, F. Moro, L. Kobera, S. Shimono, L. Wang, F. Ji, M. Cuartero, S. Kawaguchi, S. Abbrent, H. Ishibashi, R. D. Marco, I. A. Bouianova, G. A. Crespo, Y. Kubota, J. Brus, D. Y. Chung, L. Sun, W. M. Chen, M. G. Kanatzidis, F. Gao

    Science Advances   6   eabb5381   2020.11

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    Publishing type：Research paper (scientific journal)  

  • Gas-Dependent Reversible Structural and Magnetic Transformation between Two Ladder Compounds Reviewed

    J. Manabe, K. Nishida, X. Zhang, Y. Nakano, M. Fujibayashi, G. Cosquer, K. Inoue, S. Shimono, H. Ishibashi, Y. Kubota, M. Shiga, R. Tsunashima, Y. Tatewaki, S. Nishihara

    Crystals   10   841   2020.09

  • Stabilization of orthorhombic distortions in Cu-doped and Co-doped ferrimagnetic Mn3O4 Reviewed

    K. H. Lee, I.-Y. Hwang, J.-H. Chung, H. Ishibashi, Y. Kubota, S. Kawaguchi, S. Lee, S. Torii, M. Hagihala, T. Kamiyama

    Physical Review B 雑誌   101   2020.02

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    Kind of work：Joint Work  

  • Glassy anomalies in the lattice heat capacity of a crystalline solid caused by ferroelectric fluctuation Reviewed

    Y. Ishii, Y. Ouchi, S. Kawaguchi, H. Ishibashi, Y. Kubota, S. Mori

    Physical Review Materials 雑誌   3   2019.08

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    Kind of work：Joint Work  

  • Phase transitions with extremely small tetragonal distortion in substitution systems of CoV2O4 by high-angular-resolution synchrotron powder diffraction Reviewed

    S. Shimono, H. Ishibashi, S. Kawaguchi, Y. Kubota

    Journal of Solid State Chemistry 雑誌   273   37 - 44   2019.05

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    Kind of work：Joint Work  

  • Mechanochemical Synthesis and Characterization of Metastable Hexagonal Li4SnS4 Solid Electrolyte Reviewed

    K. Kanazawa, S. Yubuchi, C. Hotehama, M. Otoyama, S. Shimono, H. Ishibashi, Y. Kubota, A. Sakuda, A. Hayashi, M. Tatsumisago

    Inorganic Chemistry 雑誌   57   9925 - 9930   2018.08

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    Kind of work：Joint Work  

  • Small crystal distortion and long-range antiferro-orbital ordering in the spinel oxide CoV2O4 Reviewed

    H. Ishibashi, S. Shimono, K. Tomiyasu, S. Lee, S. Kawaguchi, H. Iwane, H. Nakao, S. Torii, T. Kamiyama, Y. Kubota

    Physical Review B   96   144424   2017.10

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    Authorship：Lead author,　Corresponding author   Kind of work：Joint Work  

  • Suppression of phase transitions at low temperature by chromium substitution in vanadium spinel Fe(V1-xCrx)2O4 Reviewed

    S. Kawaguchi, H. Ishibashi, K, Nagami, Y. Kubota

    Journal of Physics: Condensed Matter   28   296001   2016.06

  • Phase transitions and off-stoichiometric effects of vanadium spinel oxide CoV2O4 Reviewed

    S. Shimono, H. Ishibashi, S. Kawaguchi, H. Iwane, S. Nishihara, K. Inoue, S. Mori, Y. Kubota

    Materials Research Express 雑誌   3   2016.06

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    Authorship：Corresponding author  

  • Formation Phases and Electrical Properties of Ge–Bi–Te Compounds with Homologous Structures

    T. Omoto, H. Kanaya, H. Ishibashi, Y. Kubota, K. Kifune, A. Kosuga

    Journal of Electronic Materials 雑誌   45   1478 - 1483   2016.03

  • Orthorhombic distortion and orbital order in the vanadium spinel FeV2O4 Reviewed

    S. Kawaguchi, H. Ishibashi, S. Nishihara, S. Mori, J. Campo, F. Porcher, O. Fabelo, K. Sugimoto, J. Kim, K. Kato, M. Takata, H. Nakao, Y. Kubota

    Physical Review B 雑誌   93   2016.01

  • Ferro-to-antiferro orbital variation in vanadium spinel Fe1-xMnxV2O4 Reviewed

    S. Kawaguchi, H. Ishibashi, J. Kim, Y. Kubota

    Journal of Physics: Condensed Matter 雑誌   26   2014.08

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    Kind of work：Joint Work  

  • Iron Excess Effect in Structural and Magnetic Properties of Vanadium Spinel FeV2O4 Reviewed

    S. Kawaguchi, H. Ishibashi, Y. Kubota

    Journal of the Physical Society of Japan 雑誌   83   2014.07

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    Kind of work：Joint Work  

  • Fabrication of Y2O3-Doped Zirconia/Gadolinia-Doped Ceria Bilayer Electrolyte Thin Film SOFC Cells of SOFCs by Single-Pulsed Laser Deposition Processing Reviewed

    T. Mukai, S. Tsukui, K. Yoshida, S. Yamaguchi, R. Hatayama, M. Adachi, H. Ishibashi, Y. Kakehi, K. Satoh, T. Kusaka and K. C. Goretta

    Journal of Fuel Cell Science and Technology 雑誌   10   2013.12

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    Kind of work：Single Work  

  • Anomalous magnetization behaviour in a single crystal of vanadium spinel FeV2O4 Reviewed

    S. Kawaguchi, H. Ishibashi, S. Nishihara, M. Miyagawa, K. Inoue, S. Mori, Y. Kubota

    Journal of Physics: Condensed Matter 雑誌   25   2013.10

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    Kind of work：Joint Work  

  • Structural Properties in Incommensurately Modulated Spinel Compound CuV2S4 Reviewed

    Shogo Kawaguchi, Hiroki Ishibashi, Naruki Tsuji, Jungeun Kim, Kenichi Kato, Masaki Takata, Yoshiki Kubota

    Journal of the Physical Society of Japan 雑誌   82   2013.05

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    Kind of work：Joint Work  

  • Structural Analysis of Spinel Compound CuV2S4 with Incommensurate Charge Density Wave Reviewed

    S. Kawaguchi, Y. Kubota, N. Tsuji, J. Kim, K. Kato, M. Takata, H. Ishibashi

    Journal of Physics: Conference Series 雑誌   391   2012.12

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    Kind of work：Joint Work  

  • Structural and Magnetic Properties in Spinel Type Fe1-xZnxV2O4 Reviewed

    H. Ishibashi, Y. Kitadai

    Journal of Physics: Conference Series 雑誌   391   2012.12

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    Kind of work：Joint Work  

  • Appearance of magnetization jumps in magnetic hysteresis curves in spinel oxide FeV2O4 Reviewed

    S. Nishihara, W. Doi, H. Ishibashi H, Y. Hosokoshi, X. M. Ren, S. Mori

    Journal of Applied Physics 雑誌   107   2010.05

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    Kind of work：Joint Work  

  • Roughening Surface of Layered Manganite La0.5Sr1.5MnO4 by Scanning Tunneling Microscopy Reviewed

    Y. Takagi, K. Hanai, H. Hosokawa, H. Ishibashi, A. Saito, Y. Kuwahara, Y. Taguchi

    Japanese Journal of Applied Physics 雑誌   47   6456 - 6458   2008.08

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    Kind of work：Joint Work  

  • Structural transition of spinel compound NiCr2O4 at ferrimagnetic transition temperature

    H. Ishibashi, T. Yasumi

    Journal of Magnetism and Magnetic Materials 雑誌   310   e610 - e612   2007.03

  • Ir 4f hard X-ray photoemission spectrum of CuIr2S4 Reviewed

    Y. Tagichi, K. Yamamoto, K. Mimura, K. Ichikawa, K. Kitamoto, O. Aita, H. Ishibashi, Y. Takata, K. Horiba, S. Shin, M. Yabashi, K. Tamasaku, Y. Nishino, D. Miwa, T. Ishikawa, E. Ikenaga, K. Kobayashi

    Radiation Physics and Chemistry 雑誌   75   2072 - 2075   2006.11

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    Kind of work：Joint Work  

  • Valence-band structure of CuIr2S4 studied by photoemission and S L X-ray emission spectroscopies Reviewed

    K. Kitamoto, Y. Taguchi, T. Noda, Y. Fujita, K. Miura, K. Ichikawa, H. Ishibashi, S. Shin, O. Aita

    Physica B 雑誌   378-380   561 - 562   2006.05

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    Kind of work：Joint Work  

  • Spontaneous formation of vanadium "molecules" in a geometrically frustrated crystal: AlV2O4 Reviewed

    Y. Horibe, M. Shingu, K. Kurushima, H. Ishibashi, N.Ikeda, K. Kato, Y. Motome, N. Furukawa, S. Mori, T. Katsufuji

    Physical Review Letters 雑誌   96   2006.03

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    Kind of work：Joint Work  

  • Magnetism and point defect in B2-type CoFe alloys Reviewed

    M. Kogachi, N. Tadachi, H. Kohata, H. Ishibashi

    Intermetallics 雑誌   13   535 - 542   2005.05

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    Kind of work：Joint Work  

  • Electronic structure and structural properties of spinel compound CuIr2S4 Reviewed

    K. Betsuyaku, H. Ishibashi, A. Yanase N. Hamada

    Journal of Magnetism and Magnetic Materials 雑誌   272-276   295 - 296   2004.05

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    Kind of work：Joint Work  

  • Magnetic properties and long range order parameter in B2-type CoFe alloys Reviewed

    H. Ishibashi, K. Harada, M. Kogachi and S. Noguchi

    Journal of Magnetism and Magnetic Materials 雑誌   272-276   774 - 775   2004.05

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    Kind of work：Joint Work  

  • Ir 5d state of CuIr2S4: A cluster-model approach Reviewed

    K. Kitamoto, Y. Taguchi, K. Mimura, K. Ichikawa, O. Aita, H. Ishibashi

    Physical Review B 雑誌   68   2003.10

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    Kind of work：Joint Work  

  • Exchange interaction effects on the optical properties of LuMnO3 Reviewed

    A. B. Souchkov, J. R. Simpson, M. Quijada, H. Ishibashi, N. Hur, J. S. Ahn, S-W. Cheong

    Physical Review Letters 雑誌   91   2003.07

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    Kind of work：Joint Work  

  • X-ray-induced disordering of the dimerization pattern and apparent low-temperature enhancement of lattice symmetry in spinel CuIr2S4 Reviewed

    H. Ishibashi, T. Y. Koo, Y. S. Hor, A. Borissov, P. G. Radaelli, Y. Horibe, S-W. Cheong, V. Kiryukhin

    Physical Review B 雑誌   66   2002.10

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    Kind of work：Joint Work  

  • Formation of Isomorphic Ir3+ and Ir4+ Octamers and Spin Dimerization in the Spinel CuIr2S4 Reviewed

    P. G. Radaelli, Y. Horibe, M. J. Gutmann, H. Ishibashi, C. H. Chen, R. M. Ibberson, Y. Koyama, Y-S. Hor, V. Kiryukhin, S-W. Cheong

    Nature 雑誌   416   155 - 158   2002.03

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    Kind of work：Joint Work  

  • X-ray diffraction study on spinel compound CuIr2S4 with metal-insulator transition Reviewed

    H. Ishibashi, T. Sakai, and K. Nakahigashi

    Journal of Magnetism and Magnetic Materials 雑誌   226-230   233 - 234   2001.05

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    Kind of work：Joint Work  

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MISC

  • 高分解能粉末回折によるスピネル化合物の構造相転移の研究 Reviewed

    下野 聖矢, 石橋 広記, 久保田 佳基, 河口 彰吾

    日本結晶学会誌   62   2020.05

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Grant-in-Aid for Scientific Research

  • Exploration of uncharted material fields with single-molecule electrets

    Grant-in-Aid for Scientific Research(A)  2024

Charge of on-campus class subject

  • 物理実験学A

    2024   Weekly class   Undergraduate

  • 専門物理学実験A

    2024   Weekly class   Undergraduate

  • 物理学特別研究2A

    2024   Intensive lecture   Graduate school

  • 物理学特別研究1A

    2024   Intensive lecture   Graduate school

  • 物理学特別演習2A

    2024   Intensive lecture   Graduate school

  • 物理学特別演習1A

    2024   Intensive lecture   Graduate school

  • 物理学特別演習5A

    2024   Intensive lecture   Graduate school

  • 物理学特別演習4A

    2024   Intensive lecture   Graduate school

  • 物理学特別演習3A

    2024   Intensive lecture   Graduate school

  • 物理学特別研究3A

    2024   Intensive lecture   Graduate school

  • 物理学特別研究5A

    2024   Intensive lecture   Graduate school

  • 物理学特別研究4A

    2024   Intensive lecture   Graduate school

  • 物理数学B

    2024   Weekly class   Undergraduate

  • English for Scientists

    2021    

  • Experimental in Physics

    2021   Practical Training  

  • Mathematics for Physics B

    2021    

  • Demonstration of Experiments in Physics I

    2021   Practical Training  

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