Yukio Kajihara

Last Updated :2020/09/01

Affiliations, Positions
Graduate School of Advanced Science and Engineering, Assistant Professor
E-mail
kajiharahiroshima-u.ac.jp
Self-introduction
I study disordered materials (*) from the view point of physics * materials without long periodic order such like liquids and glasses

Basic Information

Academic Degrees

  • Doctor of Science, Kyoto University
  • Master of Science, Kyoto University

Research Fields

  • Mathematical and physical sciences;Physics;Mathematical physics / Fundamental condensed matter physics

Research Keywords

  • Physics of disordered materials
  • liquid-liquid transition
  • fluctuation
  • x-ray
  • Supercritical Fluid
  • Fluid Metal
  • Metal Nonmetal Transition

Educational Activity

Course in Charge

  1. 2020, Liberal Arts Education Program1, 1Term, Experimental Methods and Laboratory Work in Physics I
  2. 2020, Liberal Arts Education Program1, 3Term, Experimental Methods and Laboratory Work in Physics I
  3. 2020, Liberal Arts Education Program1, 2Term, Experimental Methods and Laboratory Work in Physics II
  4. 2020, Liberal Arts Education Program1, 4Term, Experimental Methods and Laboratory Work in Physics II
  5. 2020, Undergraduate Education, 1Term, Introduction to Physical Sciences
  6. 2020, Undergraduate Education, 3Term, Laboratory Work in Material Sciences A
  7. 2020, Undergraduate Education, 3Term, Experimental Methods for Materials Sciencs A
  8. 2020, Undergraduate Education, 1Term, Physics of Complex Liquids and Soft Matters

Research Activities

Academic Papers

  1. Structural studies on fluid sulfur at high temperatures and high pressures: I. Atomic dynamics investigated by inelastic x-ray scattering, J. Non-Crystalline Solids, 522, 119571-1-119571-6, 20190715
  2. Dynamical sound speed and structural inhomogeneity in liquid Te studied by inelastic x-ray scattering, J. Non-Crystalline Solids: X, 1, 100006-1-100006-6, 20190112
  3. Static and dynamic structures of liquid Ba8Ga16Sn30: a melt of the thermoelectric clathrate compounds, JOURNAL OF PHYSICS-CONDENSED MATTER, 30(45), 20181114
  4. Plasmons in Liquid Rb at Elevated Temperatures Studied by Inelastic X-ray Scattering, J. Phys. Soc. Jpn., 87, 084703-1-084703-7, 20180718
  5. Viscoelastic anomaly accompanying anti-crossing behaviour in liquid As2Se3, JOURNAL OF PHYSICS-CONDENSED MATTER, 30(28), 20180622
  6. Peculiar atomic dynamics in liquid GeTe with asymmetrical bonding: Observation by inelastic x-ray scattering, PHYSICAL REVIEW B, 97(17), 20180514
  7. X-ray Compton Scattering Study of Liquid Germanium and Tin, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 86(12), 124703-1-124703-6, 20171215
  8. Inelastic x-ray scattering measurements of liquid waterglycerol mixtures, EPJ Web. of Conf., 151, 06003-1-06003-8, 20170821
  9. Dispersion relations of the acoustic modes in divalent liquid metals, EPJ Web. of Conf., 151, 06002-1-06002-6, 20170821
  10. Asymmetrical bonding in liquid Bi disentangled by inelastic X-ray scattering, EPJ Web. of Conf.(EPJ Web. of Conf.), 06001-1-06001-7, 20170821
  11. Isotactic poly(4-methyl-1-pentene) melt as a porous liquid: Reduction of compressibility due to penetration of pressure medium, JOURNAL OF CHEMICAL PHYSICS, 146(19), 20170521
  12. Charge inhomogeneity in an expanded fluid metal: X-ray Compton scattering observation, EPL, 117(1), 20170228
  13. Experimental Verification of Liquid-liquid Critical Point Hypothesis from the View Point of `Fluctuations', The Review of High Pressure Science and Technology, 26(4), 288-296, 2016
  14. Phonon Excitations in Pd40Ni40P20 Bulk Metallic Glass by Inelastic X-Ray Scattering, Mater. Sci. Forum, 879, 767-772, 201612
  15. Critical Indices nu and gamma Experimentally Obtained at the Liquid-Vapor Critical Point in Fluid Hg, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 85(3), 20160315
  16. Anomalous dispersion of the acoustic mode in liquid Bi, PHYSICAL REVIEW B, 92(5), 20150825
  17. Inelastic x-ray scattering studies on dynamic structure factor of polymeric liquid Se under pressure, AIP conf. Proc., 1673, 020002, 20150817
  18. X-ray Compton scattering experiments for fluid alkali metals at high temperatures and pressures, AIP Conf. Proc., 1673, 020004, 20150817
  19. Inelastic X-ray Scattering Study on Plasmon Dispersion in Liquid Cs, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 84(8), 20150815
  20. Transverse excitations in liquid Fe, Cu and Zn, Journal of Physics: Condensed Matter, 27(19), 194104-1-7, 20150520
  21. Microscopic Elastic Properties of Polycrystalline Mg85Zn6Y9 Alloy with Long-Period Stacking Ordered 18R Phase Investigated by Inelastic X-ray Scattering, MATERIALS TRANSACTIONS, 56(7), 914-916, 20150327
  22. Inelastic x-ray scattering study of plasmon dispersions in solid and liquid Rb, PHYSICAL REVIEW B, 89(1), 20140129
  23. Electron momentum density in liquid silicon, PHYSICAL REVIEW B, 88(11), 20130916
  24. Chemical order in liquid As2Se3 at high temperatures obtained by X-ray scattering and reverse Monte Carlo modeling, JOURNAL OF NON-CRYSTALLINE SOLIDS, 366, 22-29, 20130415
  25. Transverse excitations in liquid Sn, JOURNAL OF PHYSICS-CONDENSED MATTER, 25(11), 20130320
  26. Transverse excitations in liquid metals, AIP Conf. Proc, 1518, 695-702, 20130301
  27. Density fluctuations at the continuous liquid-liquid phase transition in chalcogen systems, PHYSICAL REVIEW B, 86(21), 20121206
  28. Static and dynamical inhomogeneity at liquid - liquid phase transition of Se-Te mixtures, EPJ Web of Conference, 15, 02002, 20110501
  29. Transverse excitations in liquid Ga, Eur. Phys. J. Special Topics, 196, 85-93, 20110501
  30. Synchrotron radiation studies of an expanded fluid alkali metal, Eur. Phys. J. Special Topics, 196, 95-107, 20110501
  31. Inelastic x-ray scattering measurements of dynamical cross-over in liquid As2Se3 at high temperature and high pressure, Eur. Phys. J. Special Topics, 196, 167-174, 20110501
  32. Packing structure of chains and rings in an expanded liquid Se80Te20 mixture near the semiconductor to metal transition, Journal of Physics: Condensed Matter, 22, 455103, 20101001
  33. Small-angle x-ray scattering and density measurements of liquid Se50-Te50 mixture at high temperatures and high pressures using synchrotron radiation, Journal of Physics: Conference Series, 215, 012078, 20100301
  34. Wide and small angle X-ray scattering measurements of supercritical water using synchrotron radiation, Journal of Physics: Conference Series, 215, 012090, 20100301
  35. Icosahedral ordering in liquid iron studied via x-ray scattering and Monte Carlo simulations, PHYSICAL REVIEW B, 80(18), 20091105
  36. Icosahedral ordering in liquid iron studied via x-ray scattering and Monte Carlo simulations, Physical Review B, 80, 180201, 20091101
  37. Transverse Acoustic Excitations in Liquid Ga, Physical Review Letters, 102, 105502, 20090313
  38. Dynamical inhomogeneity of liquid Te near the melting temperature proved by inelastic x-ray scattering measurements, Journal of Physics: Condensed Matter, 20, 494244, 20081210
  39. Collective dynamics of As2Se3 glass investigated by inelastic X-ray scattering, Journal of Non-Crystalline Solids, 354, 2715-2718, 20080501
  40. Small-angle x-ray scattering of supercritical fluid Hg: Bi-impurity effect, Journal of Physics: Conference Series, 98, 012002, 20080306
  41. Structural study of expanded fluid cesium, Journal of Physics: Conference Series, 98, 012003, 20080306
  42. X-ray diffraction measurements of expanded fluid sulfur up to the supercritical region, Journal of Physics: Conference Series, 98, 012008, 20080306
  43. Structural fluctuations in expanded fluid Se accompanying the semiconductor-metal transition, J. Phys.: Conference series, 98, 012028, 20080306
  44. Dynamical structure in liquid Te using inelastic x-ray scattering: from semiconductor-metal transition to metallic regime, Journal of Physics: Conference Series, 98, 022001, 20080306
  45. Viscoelastic narrowing of a collective mode in molten CsCl observed by inelastic x-ray scattering, Journal of Physics: Condensed Matter, 19(46), 466110, 20071121
  46. X-ray diffraction measurement of liquid As2Se3 by using third-generation synchrotron radiation, JOURNAL OF NON-CRYSTALLINE SOLIDS, 353(18-21), 1985-1989, 20070615
  47. Thermal radiation method: proposal of a new technique for measuring interfacial or surface fluctuations, JOURNAL OF APPLIED CRYSTALLOGRAPHY, 40, S687-S690, 200704
  48. Electrical Resistivity of Carbon Micro Coil Measured by Multi-Probe Unit Installed in a Scanning Electron Microscope, Japanese Journal of Applied Physics, 44, 6867-6869, 20050908
  49. X-Ray Absorption and De-Excitation Processes of Krypton Clusters Studied by the XAFS-PEPICO Synchronous Measurements, Physica Scripta, T115, 984-985, 20050401
  50. Optical emissivity study of the critical fluctuations in mercury wetting film on sapphire, Journal of Physics: Condensed Matter, 15, 6179-6198, 20030917
  51. Slow dynamics due to the metal-nonmetal transition in liquid mercury, Journal of Non-Crystalline Solids, 312-314, 265-268, 20020401
  52. Slow structural relaxation in liquid Te-Se mixtures, Journal of Non-Crystalline Solids, 312-314, 361-365, 20020401
  53. Two-dimensional supercritical fluid mercury formed on a sapphire substrate, Journal of Non-Crystalline Solids, 312-314, 472-480, 20020401
  54. Critical fluctuations of mercury wetting film on sapphire, Journal of Non-Crystalline Solids, 312-314, 489-493, 20020401
  55. Size-selective EXAFS spectroscopy of free selenium clusters, Physical Review Letters, 89, 243401, 20020401
  56. Mercury wetting film on sapphire, Physical Review E, 63, 051601, 20010501
  57. Dielectric relaxation measurements on methanol up to the super critical region, Journal of Physics: Condensed Matter, 13, 10307-10320, 20010401
  58. Wetting Phenomena of Mercury on Sapphire Studied by Optical Emissivity Measurement, Journal of Physics: Condensed Matter, 12, 375-381, 20000401
  59. Anomalous sound attenuation in liquid Te50Se50 mixture under high pressure, Journal of Physics: Condensed Matter, 12, 7323-7339, 20000401
  60. Dielectric relaxation of water and heavy water in the whole fluid phase, The Journal of Chemical Physics, 110, 3026-3036, 19990401
  61. Sound attenuation in super critical fluid mercury, Journal of Non-Crystalline Solids, 250-252, 139-143, 19990401
  62. Wetting Phenomena at Mercury-Sapphire Interface under High Temperature and Pressure, Journal of Non-Crystalline Solids, 250-252, 209-213, 19990401
  63. Ellipsometric Study of Prewetting Transition at Mercury-Sapphire Interface, Journal of Physics: Condensed Matter, 10, 11589-11594, 19980401

Invited Lecture, Oral Presentation, Poster Presentation

  1. Thermodynamic anomaly of liquid water-alcohol system revisited, Yukio Kajihara, SCEJ 49th Autumn Meeting, 2017/09/21, With Invitation, The Society of Chemical Engineers, Nagoya university
  2. Where Come from Dynamic Heterogeneity in Glass Transition? : Similarity with Liquid-Liquid Transition, Y. Kajihara, M. Inui and A. Chiba, Y. Kajihara, M. Inui and A. Chiba, 8th International Discussion Meeting on Relaxations in Complex Systems, 2017/07/26, Without Invitation, Wisla, Poland
  3. Ultrasonic Sound Velocity Measurements for Liquid Water-Glycerol Mixtures, K. Nukumizu, Y. Kajihara and M. Inui, K. Nukumizu, Y. Kajihara and M. Inui, 8th International Discussion Meeting on Relaxations in Complex Systems, 2017/07/24, Without Invitation, Wisla, Poland
  4. Simple scenario for glass transition phenomena based on liquid-liquid transition framework, Y. Kajihara, M. Inui, A. Chiba, Y. Kajihara, M. Inui, A. Chiba, 10th Liquid Matter Conference, 2017/07/17, Without Invitation, European Physical Society, Ljubljana, Slovenia
  5. Inelastic x-ray scattering measurements of liquid water-glycerol mixtures, Y. Kajihara, Y. Kajihara, N. Shibata, M. Inui, K. Matsuda, S. Tsutsui, The 16th International Conference on Liquid and Amorphous Metals (LAM-16), 2016/09/06, Without Invitation, Bonn, Germany
  6. Sound velocity measurements of liquid water-methanol mixtures, N. Shibata, N. Shibata, Y. Kajihara, K. Nukumizu, M. Inui, S. Tsutsui, The 16th International Conference on Liquid and Amorphous Metals (LAM-16), 2016/09/06, Without Invitation, Bonn, Germany
  7. Time concept of entropy: from "fast sound" to glass transition, Y. Kajihara, Y. Kajihara, M. Inui and A. Chiba, The 16th International Conference on Liquid and Amorphous Metals (LAM-16), 2016/09/05, Without Invitation, Bonn, Germany
  8. "Fluctuations" in liquid water-alcohol mixtures, Y. Kajihara, Y. Kajihara, M. Inui, S. Di Fonzo, M. Saito, C. Masciovecchio, S. Tsutsui and A.Q.R. Baron, 9th Liquid Matter Conference (Liquids2014), 2014/07/22, Without Invitation, European Physical Society, Lisbon, Portugal
  9. "Fast sound" measurements for liquid water-alcohol mixtures, Y. Kajihara, Y. Kajihara, S. Di Fonzo, M. Saito, C. Masciovecchio, M. Inui, S. Tsutsui and A.Q.R. Baron, 8th International Conference on Inelastic X-ray Scattering (IXS2013), 2013/08/13, Without Invitation, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
  10. Direct detection of fluctuations in liquids - new approach for liquid-liquid phase transition -, Y. Kajihara, Perugia university seminar, 2013/02/26, Without Invitation, Perugia University, Italy, Perugia University, Italy
  11. Direct detection of fluctuations in liquids - new approach for liquid-liquid phase transition -, Y. Kajihara, Sapienza University of Rome Seminar, 2013/02/12, Without Invitation, Sapienza University of Rome, Italy, Sapienza University of Rome, Italy
  12. Direct detection of fluctuations in liquids - new approach for liquid-liquid phase transition -, Y. Kajihara, Chalmers University Seminar, 2013/02/08, Without Invitation, Chalmers University, Sweden, Chalmers University, Sweden
  13. Phase transition of liquid Se-Te mixtures, Y. Kajihara, Y. Kajihara, M. Inui and K. Matsuda, International workshop on Phase-change materials and disordered materials - towards new functional materials, With Invitation, Osaka Science and Technology Center, Japan
  14. Study of liquid-liquid phase transitions of chalcogens and water using X-ray techniques, Y. Kajihara, Elettra Seminar, 2010/07/09, Without Invitation, Elettra, Italy, Elettra, Italy

External Funds

Acceptance Results of Competitive Funds

  1. KAKENHI, 2016, 2018
  2. KAKENHI, 2014, 2015
  3. KAKENHI, "Fast sound" phenomena and liquid-liquid phase transition in liquid water: direct measurement of fluctuations = Entropy, 2012, 2013
  4. KAKENHI, Effects of high-pressure environments on atomic dynamics in disordered materials with covalent bonds, 2011, 2013
  5. KAKENHI, Transverse phonon modes in liquids: Observation by inelastic x-ray scattering, 2010, 2012
  6. KAKENHI, Liquid dynamics at metal-nonmetal transition-Attempt at description of the phase transition through fluctuations-, 2008, 2010
  7. KAKENHI, Studies on anomalous dynamic properties in supercritical metallic fluids using a high-resolution inelastic x-ray scattering technique, 2008, 2010
  8. KAKENHI, 2005, 2006
  9. KAKENHI, Bonding, Fluctuations and Dynamics in Supercritical Metallic Fluids Using Synchrotron Radiation, 2004, 2006

Social Activities

Organizing Academic Conferences, etc.

  1. 2017/03, 2017/03
  2. 2014/09
  3. 2013/09
  4. 2012/08
  5. 2011/08
  6. 2010/11