YUKI NAKAHIRA

Last Updated :2025/08/06

Affiliations, Positions
Graduate School of Advanced Science and Engineering, Assistant Professor
E-mail
nakahirahiroshima-u.ac.jp
Other Contact Details
1-7-1 Kagamiyama, Higashi-Hiroshima City Hiroshima, Japan 739-8521, Japan
TEL : (+81)82-424-6558 FAX : (+81)
Self-introduction
I am studying the synthesis and structural changes of hydrides under high pressure using synchrotron X-rays.

Basic Information

Major Professional Backgrounds

  • 2025/04/01, Hiroshima University, Graduate School of Advanced Science and Engineering, Assistant Professor
  • 2022/05/01, 2025/03/31, National Institutes for Quantum Science and Technology, Postdoc
  • 2021/04/01, 2022/04/30, Tokyo Metropolitan Universy, Faculty of Science, Department of Physics, Postdoc

Academic Degrees

  • Hiroshima University
  • Hiroshima University

Affiliated Academic Societies

  • Hydrogenomics Alliance, Japan
  • The Crystallographic Society of Japan
  • The Japan Institute of Metals and Materials
  • The physical Society of Japan

Educational Activity

Course in Charge

  1. 2025, Liberal Arts Education Program1, 3Term, Experimental Methods and Laboratory Work in Physics I
  2. 2025, Liberal Arts Education Program1, 1Term, Experimental Methods and Laboratory Work in Physics I
  3. 2025, Liberal Arts Education Program1, 4Term, Experimental Methods and Laboratory Work in Physics II
  4. 2025, Liberal Arts Education Program1, 2Term, Experimental Methods and Laboratory Work in Physics II
  5. 2025, Undergraduate Education, 1Term, Introduction to Physical Sciences

Research Activities

Academic Papers

  1. Synthesis, Crystal Structure, and Hydrogen Storage Properties of an AB3‑Based Alloy Synthesized by Disproportionation Reactions of AB2‑Based Alloys, J. Phys. Chem. C, 129(6), 2865-2873, 20250202
    Link to Paper Search Results by DOI
  2. Distortion and Destabilization of Mg Hydride Facing High Entropy Alloy Matrix, ACS Appl. Energy Mater., 7(24), 20241210
    Link to Paper Search Results by DOI
  3. Defect-Driven Evolution of Oxo-Coordinated Cobalt Active Sites with Rapid Structural Transformation for Efficient Water Oxidation, ACS Nano, 18(42), 28986-28998, 20241010
    Link to Paper Search Results by DOI
  4. Stabilization and high thermoelectric performance of high-entropy-typecubic AgBi(S, Se, Te)2, J. Alloy. Compd., 1004(5), 175679, 20241105
    Link to Paper Search Results by DOI
  5. Hydrogenation behavior of a C14 Laves phase under ultra-high hydrogen pressure, J. Alloys Compd., 965(25), 171348, 20231125
    Link to Paper Search Results by DOI
  6. Structural phase transition and spin state in the perovskite cobalt oxides La1-xPrxCoO3 (x = 0.30, 0.34), Phys. Rev. B, 109(024115), 20240129
    Link to Paper Search Results by DOI
  7. Stability and Metastability of Li3YCl6 and Li3HoCl6, Bulletin of the Chemical Society of Japan, 96(11), 1262-1268, 20230927
    Link to Paper Search Results by DOI
  8. High entropy alloys containing immiscible Mg and refractory elements: synthesis, structure and hydrogen storage properties, J. Alloys Compd., 969(25), 172415, 20231225
    Link to Paper Search Results by DOI
  9. Absence of Tc-Pinning Phenomenon Under High Pressure in High-Entropy REO0.5F0.5BiS2 Layered Superconductor, J. Phys. Soc. J., 92(114702), 20231003
    Link to Paper Search Results by DOI
  10. Elucidating Primary Degradation Mechanisms in High-Cycling-Capacity, Compositionally Tunable High-Entropy Hydrides, ACS Appl. Mater. Interfaces, 15, 38412-38422, 20230804
    Link to Paper Search Results by DOI
  11. Synthesis and Characterization of a Trigonal Layered Compound AgInS2, ACS Omega, 8(12), 11288-11292, 20230316
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  12. Glassy atomic vibrations and blurry electronic structures created by local structural disorders in high-entropy metal telluride superconductors, Mater. Today Phys., 32(101019), 202303
    Link to Paper Search Results by DOI
  13. Thermoelectric Properties of Zintl Arsenide EuCuAs, J. Electron. Mater., 52, 3121-3131, 20230217
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  14. Hydrogen absorption reactions of a hydrogen storage alloy LaNi5 under high pressure, Molucules, 28(3), 1256, 20230127
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  15. Estimation of Grüneisen Parameter of Layered Superconductor LaO0.5F0.5BiS2−xSex (x = 0.2, 0.4, 0.6, 0.8, 1.0), J. Phys. Soc. J., 92(014703), 20221221
    Link to Paper Search Results by DOI
  16. Crystal and electronic structures of BiS2-based compounds Sr0.5X0.5FBiS2 (X = rare earth) under pressure: Correlation with the change in the superconductivity from unconventional to conventional, Phys. Rev. B, 106(205122), 20221114
    Link to Paper Search Results by DOI
  17. Tuning of upper critical field in a vanadium-based A15 superconductor by the compositionally-complex-alloy concept, Journal of Materials Science, 57, 15990-15998, 20220822
    Link to Paper Search Results by DOI
  18. Lattice Anharmonicity in BiS2-Based Layered Superconductor RE(O, F)BiS2 (RE = La, Ce, Pr, Nd), J. Phys. Soc. Jpn, 91(074706), 20220609
    Link to Paper Search Results by DOI
  19. Estimation of the Gruneisen Parameter of High-Entropy-Alloy-Type Functional Materials: The Cases of REO0.7F0.3BiS2 and MTe, Condens. Matter, 7(2), 34, 20220418
    Link to Paper Search Results by DOI
  20. Robustness of superconductivity to external pressure in high-entropy-alloy-type metal telluride AgInSnPbBiTe5, Sci. Rep., 12(7789), 20220512
    Link to Paper Search Results by DOI
  21. Synthesis and Characterization of High-Entropy-Alloy-Type Layered Telluride MBi2Te4 (M = Ag, In, Sn, Pb, Bi), Materials, 15(7), 2614, 20220401
    Link to Paper Search Results by DOI
  22. Bipolar doping and thermoelectric properties of Zintl arsenide Eu5In2As6, ournal of Materials Chemistry A, 9, 26362-26370, 20211122
    Link to Paper Search Results by DOI
  23. ★, Size effect of guest cation on the AlO4 framework in aluminate sodalite-type oxides M8[Al12O24](SO4)2 (M = Sr2+ and Ca2+) in the I"4" ̅3m phase, Acta Cystallographica Section B, 77, 186-192, 20210317
    Link to Paper Search Results by DOI
  24. Structural transition with a sharp change in the electrical resistivity and spin−orbit mott insulating state in a rhenium oxide, Sr3Re2O9, Inorganic Chemistry, 60, 507-514, 20210401
    Link to Paper Search Results by DOI
  25. Electric-field-induced structural changes for cubic system of lead-free and lead-based perovskite-type oxides, Japanese Journal of Applied Physics, 59(SPPA05), 20200805
    Link to Paper Search Results by DOI
  26. Piezoelectricity in perovskite-type pseudo-cubic ferroelectrics by partial ordering of off-centered cations, Communications Materials, 1(71), 20201006
    Link to Paper Search Results by DOI
  27. Ferroelectricity of Dion-Jacobsen layered perovskites CsNdNb2O7 and RbNdNb2O7, Jpn. J. Appl. Phys., 59(SPPC04), 20200827
    Link to Paper Search Results by DOI
  28. Rotational intersite displacement of disordered lead atoms in a relaxor ferroelectric during piezoelectric lattice straining and ferroelectric domain switching, Physical Review B, 101(064104), 20200218
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  29. Antiferroelectric to antiferroelectric-relaxor phase transition in calcium strontium sulfoaluminate, Inorganic Chemistry, 58, 15410-15416, 20191106
    Link to Paper Search Results by DOI
  30. Structural fluctuation of Pb(Mg1/3Nb2/3)O3 in the cubic phase, Japanese Journal of Applied Physics, 58(SL), SLLA06, 20190823
    Link to Paper Search Results by DOI
  31. Time-resolved structure analysis of piezoelectric crystals by X-ray diffraction under alternating electric field, Japanese Journal of Applied Physics, 57(11S), 11UB06, 20180903
    Link to Paper Search Results by DOI
  32. Electric field induced lattice strain in pseudocubic Bi(Mg1/2Ti1/2)O3-modified BaTiO3-BiFeO3 piezoelectric ceramics, Applied Physics Letters, 108(172903), 20160427
    Link to Paper Search Results by DOI
  33. Two competing soft modes and an unusual phase transition in the stuffed tridymite-type oxide BaAl2O4, Physical Review B, 93(134108), 20160418
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Invited Lecture, Oral Presentation, Poster Presentation

  1. Synthesis of Al−Ru alloy hydride under GPa-level pressure, Yuki, Nakahira, Toyoto Sato, Saya Ajito, Reina Utsumi, Hiroyuki Saitoh, Tetsu Watanuki, Eiji Akiyama, The 9th International Symposium on Fuels and Energy (ISFE2025), 2025/06/30, With Invitation, English, ISFE Organizing Committee, Advanced Core for Energetics, Hiroshima University (HU-ACE), Higashihiroshima, Hiroshima, Japan

External Funds

Acceptance Results of Competitive Funds

  1. 2024/04/01, 2026/03/31