教員情報 - 下村　晋

研究概要

業績

学会発表

著書・論文歴

研究キーワード：構造物性　相転移　臨界現象　前駆現象　Ｘ線回折　X線散漫散乱　非弾性散乱　磁気散乱　コヒーレントＸ線回折　X線光子相関実験　極端条件

（最終更新日：1000-01-01 00:00:00）

  シモムラ　ススム   SHIMOMURA SUSUMU
  下村　晋
   所属   京都産業大学理学部物理科学科

職種教授

研究概要

■ 研究概要

◆研究課題 X線回折・散乱による格子・電荷・磁性の秩序と相関 ◆研究概要　物質の多様な性質を統一的に理解するためには、微視的な視点からその起源を明らかにする必要がある。本研究では，ミクロな構造から物質の性質を理解することを目的とした研究をおこなう。特に，希土類化合物や遷移金属化合物を研究対象として，格子・電荷・磁性の秩序間の相関によって起こる特異な現象の起源をX線回折・X線散漫散乱・共鳴X線磁気回折により明らかにする。また，他の教育・研究機関との共同研究として放射光を用いた新しい測定方法の開発にも取り組む。

業績

■ 学会発表

1.	2019/09/25	Negative Magnetization Effect in TbNiC₂（International Conference on Strongly Correlated Electron Systems 2019）
2.	2019/09/24	Resonant X-ray Diffraction Study of Antiferromagnetic Transition in GdNiC₂（International Conference on Strongly Correlated Electron Systems 2019）
3.	2016	Development of Mössbauer diffractometer by using nuclear resonant scattering at SPring-8 BL11XU（International Conference on Hyperfine Interaction and Their Applications）
4.	2013	Elastic Property of Ternary Carbide SmNiC2 Proved by Ultrasound Measurements（International Conference on Strongly Correlated Electron Systems）
5.	2013	Sm atomic dynamics in a charge density wave compound SmNiC2（International Conference on the Applications of the Mossbauer Effect）
6.	2009	X-ray Modulation Structural Study of RENiC₂ under High Magnetic Field（The 8th International Symposium on Crystalline Organic Metals, Superconductors and Ferromagnets (ISCOM2009)）
7.	2009	X-ray photon correlation spectroscopy study in valence fluctuation compound Eu₃S₄（The 10th International Conference on Synchrotron Radiation Instrumentation (SRI09)）
8.	2008	Lattice instability of FeNi and Fe₃Pt Invar alloys（XXI Congress and General Assembly of the International Union of Crystallography (IUCr2008)）
9.	2008	Modulated structure and ferromagnetic metallic state of SmNiC₂（XXI Congress and General Assembly of the International Union of Crystallography (IUCr2008)）
10.	2006	Coherent X-ray Diffraction for Domain Observation（17th MRS-J Symposium）
11.	2006	Structural properties of a mixed valence compound Fe₂BO₄（17th International Conference of Magnetism）
12.	2005	Incommensurate and commensurate quadrupole orders in Ce_0.7Pr_0.3B₆（Third Hiroshima Workshop on Novel Functional Materials with Multinary Freedoms）
13.	2003	Magnetic field induced phase transition in distorted perovskite Eu_0.6Sr_0.4MnO₃（International Conference on Magnetism）
14.	2003	Non-resonant X-ray Diffraction Measurements on CeB₆（Polarized Neutron and Synchrotron X-rays for Magnetism）
15.	2003	Synchrotron x-ray diffraction studies on magnetic materials in high magnetic fields” 7th International Symposium on Research in High Magnetic Fields（7th International Symposium on Research in High Magnetic Fields）
16.	2002	Field and Pressure Effects on Correlations Associated with Charge-Orbital Ordering in Manganits（XIX IUCr Congress & General Assembly）
17.	2001	Polaron lifetime in La_0.75Ca_0.25MnO₃（International Conference on Neutron Scattering）
18.	2000	X-ray Diffuse Scattering from (Nd_1-ySm_y)_1-xSr_xMnO₃ and Pr_1-xCa_xMnO₃（Physics in Local Lattice Distortions）
19.	1999	X-ray Study on Diffuse Scattering in (Nd_0.125Sm_0.825)_0.52Sr_0.48MnO₃（XVIII IUCr Congress & General Assembly）
20.	1997	Hydrostatic Pressure Effects on the Phase Transitions in [Z(CH₃)₄]₂CuCl₄ (Z = N, P)（The Ninth International Meeting on Ferroelectricity）
21.	1996	Pressure-Induced Modulated Phases of [N(CH₃)₄]₂CuCl₄（Seventeenth Congress and General Assembly of the International Union of Crystallography）
22.	1993	Pressure-Induced Modulated Phases of [N(CH₃)₄]₂MCl₄ (M = Mn, Zn)（Sixteenth Congress of the International Union of Crystallography）
23.	1993	Structural Study of Orthorhombic C₆₀ Crystal under High Pressure（Sixteenth Congress of the International Union of Crystallography）
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■ 著書・論文歴

1.	2024	論文	Synchrotron Mössbauer Micro γ-ray Diffractometer Installed on BL11XU at SPring-8 JPS Conf. Proc. 41,pp.011002 （共著）
2.	2023	論文	Anomalous Interference Effect in Pure Nuclear Bragg Reflection of Fe3O4 J. Phys. Soc. Jpn. 92,pp.124708 （共著）
3.	2021	論文	Pure Nuclear Bragg Reflection due to Combined Magnetic and Quadrupole Interaction in Fe₃O₄ J. Phys. Soc. Jpn. 90,pp.104713-1-104713-5 （共著）
4.	2020	論文	Resonant X-ray Diffraction Study of Antiferromagnetic Transition in GdNiC₂ JPS Conf. Proc. 30,pp.011081-1-011081-6 （共著）
5.	2020	論文	Synchrotron Mössbauer Diffraction of Natural Iron Fe₃BO₆ J. Phys. Soc. Jpn. 89(12),125001頁（共著）
6.	2019	論文	Lattice Modulation and Structural Phase Transition in the Antiferromagnet EuAl₄ J. Phys. Soc. Jpn. 88,pp.014602-1-014602-5 （共著）
7.	2019	論文	The First Observation of Pure Nuclear Bragg Reflection from Natural Iron α-Fe2O3 by Synchrotron Mössbauer Diffraction J. Phys. Soc. Jpn. 88,10302頁（共著）
8.	2018	論文	Crystal-site-selective spectrum of Fe3O4 obtained by synchrotron Mössbauer diffraction SPring-8/SACLA Research Frontiers 2017 pp.62-63 （共著）
9.	2017	論文	Crystal-Site-Selective Spectrum of Fe3BO6 by Synchrotron Mössbauer Diffraction with Pure Nuclear Bragg Scattering J. Phys. Soc. Jpn. 86,pp.084701 （共著）
10.	2017	論文	Crystal-Site-Selective Spectrum of Fe3O4 Obtained by Mössbauer Diffraction J. Phys. Soc. Jpn. 86,pp.023706 （共著）
11.	2017	論文	Interplay between charge density wave and antiferromagnetic order in GdNiC2 Phys. Rev. B 95,pp.085103-1-5 （共著）
12.	2017	論文	X-Ray Diffraction Study of Charge Density Waves in the Antiferromagnet GdNiC₂ Photon Factory Highlights 2016 pp.22-23 （共著）
13.	2016	論文	Development of Mo ̈ssbauer diffractometer by using nuclear resonant scattering at SPring-8 BL11XU Hyperfine Interactions 237,pp.157 （共著）
14.	2016	論文	Double Bragg scattering observed in small-angle X-ray scattering from highly oriented pyrolytic graphite J. Appl. Cryst. 49,pp.835-844 （共著）
15.	2016	論文	Multiple charge density wave transitions in the antiferromagnets RNiC2 (R = Gd, Tb) Phys. Rev. B 93,pp.165108-1-11 （共著）
16.	2014	論文	Elastic Property of Ternary Carbide SmNiC2 Proved by Ultrasound Measurements JPS Conference Proceedings 3,pp.011063-1-5
17.	2014	論文	Sm atomic dynamics in a charge density wave compound SmNiC2 Hyperfine Interactions 226,pp.637-642
18.	2012	論文	Magnetic field switching of the charge-density-wave state in the lanthanide intermetallic SmNiC2 Phys. Rev. B 85, 092402-1-5
19.	2011	論文	Contribution of intermediate submicrometer structures to physical properties near Tc in Pb(Zn1/3Nb2/3)O3-9%PbTiO3 Phys. Rev. B 83, 224115-1-7
20.	2011	論文	Successive transition in rare-earth intermetallic compound GdNiC2 Journal of Physics: Conference Series 320, 012072-1-4
21.	2010	論文	Pseudogap of Charge-Density-Wave Compound SmNiC₂ Studied by High-Resolution Photoemission Spectroscopy J. Phys. Soc. Jpn. 79/4,044707-1-3
22.	2010	論文	X-ray Intensity Fluctuation Spectroscopy Using Nanofocused Hard X-rays: Its Application to Study of Relaxor Ferroelectrics Jpn. J. Appl. Phys. 49, 020216-1-3
23.	2010	論文	X-ray photon correlation spectroscopy study in valence fluctuation compound Eu₃S₄ AIP Conf. Proc. 1234,935-938
24.	2010	論文	X線回折・散漫散乱による強磁性希土類化合物における電荷密度波の発生と消滅の観測放射光（Journal of the Japanese Society for Synchrotro 23/1,20-25
25.	2009	論文	Charge-Density-Wave Destruction and Ferromagnetic Order in SmNiC₂ Phys. Rev. Lett. 102,076404-1-4
26.	2008	論文	Elastic diffuse scattering of neutrons in FeNi Invar alloys Phys. Rev. B 78,094105
27.	2008	論文	Lattice instability of FeNi and Fe₃Pt Invar alloys Acta Crystallographica A 64,C433
28.	2008	論文	Modulated structure and ferromagnetic metallic state of SmNiC₂ Acta Crystallographica A 64,C103
29.	2007	論文	Coherent X-ray Diffraction for Domain Observation Trans. of Mater. Res. Soc. Jpn. 32,7-10
30.	2007	論文	Structural properties of a mixed valence compound Fe₂BO₄ J. Mag. Mag. Mat. 310,793-795
31.	2007	論文	X-ray Diffraction Study on Charge and Orbital Order in Pr_0.65Ca_0.35MnO₃ under High Pressure J. Phys. Soc. Jpn. 76,124603
32.	2006	論文	Direct Observation of an Incommensurate Multipolar Order in CeB₆ doped with Pr J. Phys. Soc. Jpn. 75,07370
33.	2006	論文	Incommensurate and commensurate quadrupole orders in Ce_0.7Pr_0.3B₆ Physica B 383, 39-40
34.	2005	論文	Manupulating the Multipole Moments in CeB₆ by Magnetic Fields J. Phys. Soc. Jpn. 74, 2201-2204
35.	2005	論文	Study of High-Field Magnetic Phases of the Low-Carrier-System CeP by Synchrotron Radiation X-ray Diffraction J. Phys. Soc. Jpn. 74,2301-2309
36.	2005	論文	Synchrotron X-ray Diffraction Studies of α-Gd₂S₃ J. Phys. Soc. Jpn. 74,1598-1601
37.	2005	論文	The giant magneto-volume effect in solid oxygen J. Phys. Cond. Matter 17,L235-L239
38.	2004	論文	Direct and quantitative determination of the orbital ordering in CeB₆ by X-ray diffraction Europhysics Letters 68,671-677
39.	2004	論文	Lattice Constants, Electrical Resistivity and Specific Heat of RNiC₂ J. Phys. Soc. Jpn. 73,2790-2794
40.	2004	論文	Magnetic Field Induced Phase Transition in Distorted Perovskite Eu_0.6Sr_0.4MnO₃ J. Mag. Mag. Mat. 272-276, 424-425
41.	2004	論文	Non-resonant X-ray Bragg diffraction by CeB₆ PHYSICA B 345,78-81
42.	2004	論文	Observation of a lattice instability at the field-induced phase transition of the spin-gapped compound Cu₂(C₅H₁₂N₂)₂Cl₄ Phys. Rev. B 69, 220409
43.	2004	論文	Structural Change on the Magnetic Field-Induced Insulator-to-Metal Transition in Distorted Perovskite Eu_0.6Sr_0.4MnO₃ J. Phys. Soc. Jpn. 73,3059-3063
44.	2004	論文	Synchrotron X-ray Diffraction Studies of the Incommensurate Phase of a Spin-Peierls System CuGeO₃ in Strong Magnetic Fields J. Phys. Soc. Jpn. 73,2650-2653
45.	2004	論文	Synchrotron X-ray Diffraction Studies on Magnetic Materials in High Magnetic Fields PHYSICA B 346,11-14
46.	2004	論文	The Coexistence of Magnetic Phases at the First-Order Phase Transition of a Metamagnet FeCl₂2H₂O Studied by X-ray Diffraction J. Phys. Cond. Mat. 16,L57-L63
47.	2003	論文	Magnetic field induced phase transition in distorted perovskite Eu_0.6Sr_0.4MnO₃ SPring-8 Research Frontiers 2003 ,50-51
48.	2002	論文	Field and Pressure Effects on Correlations Associated with Charge-Orbital Ordering in Manganits Acta Crystallographica A 58(Suppl.),C159
49.	2002	論文	Observation of field-induced magnetic and structural transitions in an antiferromagnet by means of synchrotron x-rays J. Phys. Cond. Mat. 14,L619-L623
50.	2002	論文	Polaron lifetime in La_0.75Ca_0.25MnO₃ Applied Physics A 74,S1782-S1784
51.	2001	論文	X-ray Diffuse Scattering from (Nd_1-ySm_y)_1-xSr_xMnO₃ and Pr_1-xCa_xMnO₃ AIP Conf. Proc. 554,437-441
52.	2000	論文	X-ray Diffuse Scattering Study on Charge-Localized States of Pr_1-xCa_xMnO₃ (x = 0.35, 0.4, 0.5) Phys. Rev. B 62,3875-3878
53.	1999	論文	Effect of Magnetic Transitions and Charge-Ordering on Crystal Lattice in Nd_0.5Sr_0.5MnO₃ J. Phys. Soc. Jpn. 68,1943-1947
54.	1999	論文	X-Ray Diffuse Scattering due to Polarons in a Colossal Magnetoresistive Manganite Phys. Rev. Lett. 83,4389-4392
55.	1999	論文	X-ray Study on Diffuse Scattering in (Nd_0.125Sm_0.875)_0.52Sr_0.48MnO₃ Acta Crystallographica A 55(Suppl.),497
56.	1998	論文	Hydrostatic Pressure Effects on the Phase Transitions in [Z(CH₃)₄]₂CuCl₄ (Z = N, P) J. Korean Phys. Soc. 32,S888-S890
57.	1997	論文	Pressure-induced Phase Transitions and Change in Crystal Color in [N(CH₃)₄]₂CuCl₄ J. Phys. Soc. Jpn. 66,1242-1244
58.	1997	論文	８Ｔまでの強磁場下におけるＸ線回折実験固体物理 32,650-656
59.	1996	論文	High-Resolution X-Ray Diffraction Study of Commensurate-Incommensurate Phase Transition in [N(CH₃)₄]₂MnCl₄ under Pressure J. Phys. Soc. Jpn. 65,661-663
60.	1996	論文	Multicritical Point in Structurally Incommensurate [N(CH₃)₄]₂CuCl₄ under Pressure Phys. Rev. B 54,6915-6920
61.	1996	論文	Pressure-Induced Modulated Phases of [N(CH₃)₄]₂CuCl₄ Acta Crystallographica A 52(Suppl.),C437
62.	1996	論文	Systematics in the Commensurate-Incommensurate Phase Transition in [N(CH₃)₄]₂MCl₄ (M = Zn, Fe, and Mn) under Pressure Phys. Rev. B 53,8975-8982
63.	1996	論文	整合-不整合相転移における圧力-温度相図の系統性　—悪魔の花の探索- 固体物理 31,1-9
64.	1995	論文	Hydrostatic Pressure Effect on the Ferroelastic Monoclinic Phase of [N(CH₃)₄]₂MCl₄ (M = Fe, Zn) J. Phys. Soc. Jpn. 64,4759-4765
65.	1995	論文	新博士紹介放射光（Journal of the Japanese Society for Synchrotro 8,85
66.	1993	論文	Pressure-Induced Modulated Phases of [N(CH₃)₄]₂MCl₄ (M = Mn, Zn) Acta Crystallographica A 49(Suppl.),438
67.	1993	論文	Pressure-Induced Phase Transition in an Orthorhombic C₆₀ Crystal Solid State Commu. 85,471-473
68.	1993	論文	Structural Study of Orthorhombic C₆₀ Crystal under High Pressure Acta Crystallographica A 49(Suppl.), 301
69.	1993	論文	第16回国際結晶学会会議報告放射光（Journal of the Japanese Society for Synchrotro 6,103
70.	1991	論文	Systematics in the Modulated Phases of [N(CH₃)₄]₂MnCl₄ J. Phys. Cond. Mat. 3,3387-3391
71.	1990	論文	On the Length Scales of the Critical Fluctuations in SrTiO₃ Solid State Commu. 76,443-448
72.	1988	論文	X-ray Diffraction Study of Phase Transition in [N(CH₃)₄]₂MnCl₄ under Pressure Solid State Commu. 67,329-332
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経歴

■ 所属学会

1.		日本放射光学会
2.	2012～2014	∟ 編集委員
3.		日本物理学会
4.	～2019/08	日本高圧力学会

その他

■ ホームページ

http://www.cc.kyoto-su.ac.jp/~susumu/index.html

■ 現在の専門分野

半導体、光物性、原子物理, 磁性、超伝導、強相関系　（キーワード：構造物性　相転移　臨界現象　前駆現象　Ｘ線回折　X線散漫散乱　非弾性散乱　磁気散乱　コヒーレントＸ線回折　X線光子相関実験　極端条件）