Naoki Ishimatsu

Last Updated :2021/04/06

Affiliations, Positions
Graduate School of Advanced Science and Engineering, Assistant Professor
E-mail
ishimatsunaokihiroshima-u.ac.jp
Other Contact Details
"HIGASHI-HIROSHIMA, KAGAMIYAMA, 1-3-1", Japan
TEL : (+81)824-24-7386 FAX : (+81)824-24-0717
Self-introduction
I am a high-pressure researcher using X-ray absorption spectroscopy

Basic Information

Major Professional Backgrounds

  • 2001/10/01, 2007/03/31, Hiroshima University, Graduate School of Science, Research Associate
  • 2007/04/01, 2020/03/31, Hiroshima University, Graduate School of Science, Assistant Professor

Educational Backgrounds

  • Tokyo Institute of Technology, Japan, 1996/04, 1999/03
  • Toyama University, Japan, 1994/04, 1996/03
  • Toyama University, Japan, 1990/04, 1994/03

Academic Degrees

  • Doctor of Science, Tokyo Institute of Technology
  • Master of Science, Toyama University

Educational Activity

  • 【Bachelor Degree Program】School of Science : Physics
  • 【Master's Program】Graduate School of Advanced Science and Engineering : Division of Advanced Science and Engineering : Physics Program
  • 【Doctoral Program】Graduate School of Advanced Science and Engineering : Division of Advanced Science and Engineering : Physics Program

In Charge of Primary Major Programs

  • Physics

Research Fields

  • Engineering;Material engineering;Structural / Functional materials

Research Keywords

  • high pressure
  • X-ray absorption spectroscopy
  • synchrotron radiation

Affiliated Academic Societies

  • The Japanese Society for Synchrotron Radiation Research
  • The Physical Society of Japan(JPS)
  • The Japan Society of High Pressure Science and Technology
  • The Iron and Steel Institute of Japan

Educational Activity

Course in Charge

  1. 2021, Undergraduate Education, 4Term, Advanced Physics
  2. 2021, Undergraduate Education, First Semester, Laboratory in PhysicsI
  3. 2021, Undergraduate Education, Second Semester, Laboratory in PhysicsII
  4. 2021, Undergraduate Education, 2Term, Special Lectures in Physics(Practical Data Analysis B (Condensed Matter Physics))
  5. 2021, Graduate Education (Master's Program) , First Semester, Seminar in Physical Science
  6. 2021, Graduate Education (Master's Program) , Second Semester, Seminar in Physical Science
  7. 2021, Graduate Education (Master's Program) , First Semester, Seminar on Electronic Properties
  8. 2021, Graduate Education (Master's Program) , Second Semester, Seminar on Electronic Properties
  9. 2021, Graduate Education (Master's Program) , 1Term, Special Topics in Synchrotron Radiation Science A
  10. 2021, Graduate Education (Master's Program) , 1Term, Exercise in Physics I
  11. 2021, Graduate Education (Master's Program) , 2Term, Exercise in Physics I
  12. 2021, Graduate Education (Master's Program) , 3Term, Exercise in Physics II
  13. 2021, Graduate Education (Master's Program) , 4Term, Exercise in Physics II
  14. 2021, Graduate Education (Master's Program) , 1Term, Special Exsecise in Physics A
  15. 2021, Graduate Education (Master's Program) , 2Term, Special Exsecise in Physics A
  16. 2021, Graduate Education (Master's Program) , 3Term, Special Exsecise in Physics B
  17. 2021, Graduate Education (Master's Program) , 4Term, Special Exsecise in Physics B
  18. 2021, Graduate Education (Master's Program) , Academic Year, Special Research in Physics

Research Activities

Academic Papers

  1. X-ray magnetic spectroscopy at high pressure: performance of SPring-8 BL39XU, JOURNAL OF SYNCHROTRON RADIATION, 16, 730-736, 200911
  2. Direct observation of the pressure-induced charge redistribution in BiNiO3 by x-ray absorption spectroscopy, PHYSICAL REVIEW B, 80(23), 200912
  3. Antiferromagnetic Phase Transition in Ordered FePt3 Investigated by Angle-Resolved Photoemission Spectroscopy, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 79(2), 201002
  4. Novel Magnetic Domain Structure in Iron Meteorite Induced by the Presence of L1(0)-FeNi, APPLIED PHYSICS EXPRESS, 3(1), 2010
  5. Pressure-Induced Spin-State Transition in BiCoO3, JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 132(27), 9438-9443, 20100714
  6. Noncollinear Spin Structure in Fe-Ni Invar Alloy Probed by Magnetic EXAFS at High Pressure, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 80(2), 201102
  7. Paramagnetism with anomalously large magnetic susceptibility in beta(fcc)-cobalt probed by x-ray magnetic circular dichroism up to 170 GPa, PHYSICAL REVIEW B, 83(18), 20110509
  8. Pressure-induced changes in the magnetic and valence state of EuFe2As2, PHYSICAL REVIEW B, 84(2), 20110705
  9. Instability of Co Spin Moment in ErCo2 Probed by Magnetic Compton Scattering under High Pressure, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 80(9), 201109
  10. Colossal negative thermal expansion in BiNiO3 induced by intermetallic charge transfer, NATURE COMMUNICATIONS, 2, 201106
  11. X-ray Magnetic Circular Dichroism Study of Metamagnetic Behaviour in the Heavy-Fermion System CeRu_2_Si_2_, J. Phys.: Condens. Matter, 15, S2171-2174, 20030401
  12. Charge-Magnetic Roughness Correlations in an Fe/Gd Multilayer, Physical Review B, 60, 12234-12238, 19990401
  13. Pressure-Induced Magnetic Transition in Fe4N Probed by Fe K-edge XMCD Measurement, Nuclear Inst. and Methods in Physics Research, A467-8, 1061-1063, 20010401
  14. Pressure-induced phase transitions in lanthanide monoantimonides with a NaCl-type structure,, Physical Review B, 64, 132101, 20010401
  15. Magnetization curves of an Fe/Gd multilayer film calculated from Gd magenetization depth profiles determined by resonant x-ray magnetic scattering, J. Phys.= Condens. Matter, 14, 5289-5301, 20020401
  16. Studies of the pressure dependence of the charge density distribution in cerium phosphide by the maximum-entropy method, J. Physics: Cond. Matt., 14, ) 11143-11146, 20020401
  17. Pressure-Induced Magnetic Transition in Fe4N Probed by Fe K-edge XMCD Measurement, J. Phys. Sci. Jpn., 72, 2372-2376, 20030901
  18. The Valence state of Yb metal unser high pressure determined by XANES measurement up to 34.6 GPa, J. Alloys and Compounds, 375, 34-37, 20040401
  19. XMCD study of magnetic transition in Mn3ZnC perovskite, Physica B, 351, 328-332, 20040401
  20. Mg/Si ratios of aqueous fluids coexisting with forsterite and enstatite based on the phase relation in the Mg2SiO4-SiO2-H2O system, American Mineralogist, 89, 1433-1437, 20040401
  21. X-ray reflectivity at the L edges of Gd, Journal of Synchrotron Radiation, 4, 175-179, 19970701
  22. X-ray circular dichroic Bragg reflection from a GdCo/Ag multilayer, Japanese Journal of Applied Physics, 36, 4525-4530, 19970401
  23. Resonant X-ray magnetic scattering from a twisted states of an Fe/Gd multilayer, Physica, B248, 133-139, 19980401
  24. Magnetic structure of Fe/Gd multilayers determined by resonant x-ray magnetic scattering, Physical Review B, B60(13), 9596-9606, 19991001
  25. The Valence state of Yb ion in YbInAu2 Compound at High Pressure determined by x-ray diffraction and x-ray Absorption near edge structure measurements, Journal of Applied Physics, 100, 043712 1-4, 20061001
  26. Maicrostructure analysis using a photoelectron emission microscope (PEEM) with hard x-ray, e-Journal of Surface Science and Nanotechnology, 4, 490-493, 20060703
  27. Effect of hydrogenation on the electronic state ofmetallic La hydrides probed by X-ray absorption spectroscopy at the La L-edges, Journal of Physics: Conference Series, 012070, 20091101
  28. Magnetic structures of an iron-gadolinium multilayer at low temperatures, JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 41(3A), 1331-1339, 200203
  29. X-ray magnetic circular dichroism study of metamagnetic behaviour in the heavy-fermion system CeRu2Si2, JOURNAL OF PHYSICS-CONDENSED MATTER, 15(28), S2171-S2174, 20030723
  30. XMCD study of magnetic phase transition in Mn3ZnC perovskite, PHYSICA B-CONDENSED MATTER, 351(3-4), 328-332, 20040915
  31. Magnetic moment in the top Pt layer of Co/Pt bilayers, PHYSICA SCRIPTA, T115, 580-582, 2005
  32. Ga magnetic polarization in Mn3GaC under high pressure probed by GaK-edge XMCD, PHYSICA SCRIPTA, T115, 591-593, 2005
  33. Mg/Si ratios of aqueous fluids coexisting with forsterite and enstatite based on the phase relations in the Mg2SiO4-SiO2-H2O system, AMERICAN MINERALOGIST, 89(10), 1433-1437, 200410
  34. Experimental system for X-ray magnetic diffraction under extreme conditions, JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 65(12), 2089-2092, 200412
  35. Revealing Fe magnetism in lanthanide-iron intermetallic compounds by tuning the rare-earth L-2,L-3-edge x-ray absorption edges, PHYSICAL REVIEW B, 72(5), 200508
  36. Depth profile of spin and orbital magnetic moments in a subnanometer Pt film on Co, PHYSICAL REVIEW B, 72(5), 200508
  37. Magnetic phase transition in Laves phase DyCo2 probed by XRD and XMCD under high pressure, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 238(1-4), 167-170, 200508
  38. Relationship between the magnetic moment of Lu and the magnetic behavior of (YyLu1-y)(Co1-xAlx)(2) from x-ray absorption spectroscopy and x-ray magnetic circular dichroism, PHYSICAL REVIEW B, 75(6), 200702
  39. X-ray magnetic circular dichroism study of the decoupling of the magnetic ordering of the Er and Co sublattices in Er1-xYxCo2 systems, PHYSICAL REVIEW B, 75(14), 200704
  40. Experimental evidence of pressure-induced suppression of the cobalt magnetic moment in ErCo2, PHYSICAL REVIEW B, 75(18), 200705
  41. Stability of ferromagnetism in Fe, Co, and Ni metals under high pressure, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 76(6), 200706
  42. Easy-axis rotation in meteoritic iron probed by photoelectron emission microscope (PEEM), SURFACE SCIENCE, 601(18), 4326-4328, 20070915
  43. Application of photoelectron emission microscopy (PEEM) to extraterrestrial materials, SURFACE SCIENCE, 601(20), 4764-4767, 20071015
  44. Luminescence mechanism of (Pr, Al)-doped SrTiO(3) fine particles investigated by x-ray absorption spectroscopy, PHYSICAL REVIEW B, 78(7), 200808
  45. Orbital contribution to perpendicular magnetic anisotropy in Co80Pt20 thin films, JOURNAL OF APPLIED PHYSICS, 106(3), 20090801
  46. Direct metallographic analysis of an iron meteorite using hard x-ray photoelectron emission microscopy, IBM JOURNAL OF RESEARCH AND DEVELOPMENT, 55(4), 2011
  47. Hydrogen-induced modification of the electronic structure and magnetic states in Fe, Co, and Ni monohydrides, PHYSICAL REVIEW B, 86(10), 20120924
  48. Glitch-free X-ray absorption spectrum under high pressure obtained using nano-polycrystalline diamond anvils, JOURNAL OF SYNCHROTRON RADIATION, 19, 768-772, 201209
  49. Pressure-Temperature Phase Diagram of Sm Valence State in a Heavy Fermion Compound SmOs4Sb12, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 82(2), 201302
  50. 064206Structural, magnetic and electronic state characterization of L1(0)-type ordered FeNi alloy extracted from a natural meteorite, JOURNAL OF PHYSICS-CONDENSED MATTER, 26(6), 20140212
  51. alpha-epsilon transition pathway of iron under quasihydrostatic pressure conditions, PHYSICAL REVIEW B, 90(1), 20140717
  52. Pressure-Induced Valence Crossover and Novel Metamagnetic Behavior near the Antiferromagnetic Quantum Phase Transition of YbNi3Ga9, PHYSICAL REVIEW LETTERS, 114(8), 20150224
  53. Simultaneous Pressure-Induced Magnetic and Valence Transitions in Type-I Clathrate Eu8Ga16Ge30, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 83(1), 201401
  54. X-ray absorption study of the local dipole moment in SrTiO3 under uniaxial pressure, JOURNAL OF THE KOREAN PHYSICAL SOCIETY, 66(9), 1386-1388, 201505
  55. Differences in local structure around Co and Fe of the BiCo1-xFexO3 system determined by x-ray absorption fine structure, PHYSICAL REVIEW B, 92(5), 20150821
  56. Two-Step Suppression of Charge Disproportionation in CaCu3Fe4O12 under High Pressure, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 85(3), 20160315
  57. Pressure-induced valence change toward the QCP in 4f-electron compounds determined by X-ray absorption spectroscopy, HIGH PRESSURE RESEARCH, 36(3), 419-428, 201609
  58. Applications of nano-polycrystalline diamond anvils to X-ray absorption spectroscopy under high pressure, HIGH PRESSURE RESEARCH, 36(3), 381-390, 201609
  59. Pressure-Driven Spin Crossover Involving Polyhedral Transformation in Layered Perovskite Cobalt Oxyfluoride, SCIENTIFIC REPORTS, 6, 20161102
  60. High-Pressure-Hydrogen-Induced Spin Reconfiguration in GdFe2 Observed by Fe-57-Polarized Synchrotron Radiation Mossbauer Spectroscopy with Nuclear Bragg Monochromator, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 85(12), 20161215
  61. Relationship between element-selective electronic states and hydrogen absorption properties of Pd-M (M = Ru, Rh, Ag, and Au) alloys, PHYSICAL REVIEW B, 95(2), 20170130
  62. Isotropic shrinkage of the oxygen octahedron in SrTiO3 under uniaxial pressure, JOURNAL OF PHYSICS-CONDENSED MATTER, 29(39), 20171004
  63. Effect of Fe-site Substitution on Pressure-induced Spin Transition in SrFeO2, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 86(12), 20171215
  64. Temperature and pressure dependences of Sm valence in intermediate valence compound SmB6, PHYSICA B-CONDENSED MATTER, 536, 197-199, 20180501
  65. Pressure and magnetic field effects on the valence transition of EuRh2Si2, PHYSICA B-CONDENSED MATTER, 536, 427-431, 20180501
  66. Kondo-like behavior near the magnetic instability in SmB6: Temperature and pressure dependences of the Sm valence, PHYSICAL REVIEW B, 97(16), 20180430

External Funds

Acceptance Results of Competitive Funds

  1. KAKENHI, 2013, 2015
  2. KAKENHI, Study of Hydrogen effect on the electronic state of transition metal hydrides, 2011, 2012
  3. KAKENHI, Magnetic Anisotropy and Orbilal Magnetic Moment in Ordered FePt Nanoparticles, 2005, 2007
  4. KAKENHI, Mechanism and novel functions of pressure-induced superconductor-insulator transition in chalcogenide spinels, 2005, 2007
  5. KAKENHI, 2004, 2005
  6. KAKENHI, 2015
  7. KAKENHI(Fund for the Promotion of Joint International Research (Fostering Joint International Research)), 2016, 2017
  8. KAKENHI(Grant-in-Aid for Scientific Research (C)), 2017, 2019