Scaling in the correlations of inhomogeneous domains in functional materials
Project/Area Number |
25400355
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Condensed matter physics II
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Research Institution | 一般財団法人総合科学研究機構(総合科学研究センター(総合科学研究室)及び中性子科学センター(研究開発 |
Principal Investigator |
Matsuura Masato 一般財団法人総合科学研究機構(総合科学研究センター(総合科学研究室)及び中性子科, 中性子科学センター, 副主任研究員 (30376652)
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Co-Investigator(Renkei-kenkyūsha) |
ENDO HITOSHI 高エネルギー加速器研究機構, 物質構造科学研究所, 准教授 (40447313)
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Research Collaborator |
KOREEDA AKITOSHI 立命館大学, 教授 (40323878)
Gehring Peter NIST Center for Neutron Research, Researcher
Xu Guangyong NIST Center for Neutron Research, Researcher
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Project Period (FY) |
2013-04-01 – 2017-03-31
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Project Status |
Completed (Fiscal Year 2016)
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Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2013: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
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Keywords | 巨大応答 / 不均一構造 / 自己相似性 / フラクタル次元 / リラクサー強誘電体 / 中性子準弾性散乱 / 中性子小角散乱 / マイクロドメイン / スケーリング指数 |
Outline of Final Research Achievements |
In order to reveal microscopic mechanism of the giant response in relaxor ferroelectrics and manganites, we have used neutron scattering to study correlations of inhomogeneous nano-sized domains which are commonly observed in these functional materials. From scaling analysis on the correlation of inhomogeneous domains, we have clarified that sparse correlation due to inhomogeneity is one of the key for giant responses. In addition, we have discovered novel relaxation mode with incommensurate wave vector from MEM analysis on the distribution of relaxation modes. Furthermore, we have found nano-sized domains with low-crystal symmetry only in the inhomogeneous compounds but not in the homogeneous compound. Thus, we have succeeded in evaluating correlations of inhomogeneous domains quantitatively and have found some key elements of inhomogeneous correlations for giant responses.
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Report
(5 results)
Research Products
(26 results)
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[Journal Article] The Performance of TOF near Backscattering Spectrometer DNA in MLF, J-PARC2015
Author(s)
K. Shibata, N. Takahashi, Y. Kawakita, M. Matsuura, T. Yamada, T. Tominaga, W. Kambara, M. Kobayashi, Y. Inamura, T. Nakatani, K. Nakajima, and M. Arai
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Journal Title
JPS Conference Proceedings
Volume: 8
Pages: 036022-036022
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Phase diagram of the relaxor ferroelectric (1-x)Pb(Mg1/3Nb2/3)O3+xPbTiO3 revisited -a neutron powder diffraction study of the relaxor skin effect2015
Author(s)
D. Phelan, E.E. Rodriguez, J. Gao, Y. Bing, Z.-G. Ye, Q. Huang, Jinsheng Wen, Guangyong Xu, C. Stock, M. Matsuura, and P.M. Gehring
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Journal Title
Phase Transitions
Volume: 88
Issue: 3
Pages: 1-23
DOI
Related Report
Peer Reviewed
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[Presentation] M. Matsuura, T. Tominaga, T. Yamada, K. Shibata, Y. Kawakita2015
Author(s)
Mode distribution analysis of quasielastic neutron scattering in relaxor ferroelectrics
Organizer
Future and Current Use of Neutron Spin-Echo Spectroscopy in Condensed Matter Research workshop
Place of Presentation
Oak Ridge National Laboratory (USA)
Year and Date
2015-05-13
Related Report
Int'l Joint Research / Invited
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