Correlation effects among thermal displacements of atoms in KBr

Sakuma, Takashi*; Xianglian*; Shimizu, Norifumi*; Mohapatra, S. R.*; Isozaki, Nobuhiro*; Uehara, Hiroyuki*; Takahashi, Haruyuki*; Basar, K.*; Igawa, Naoki ; Kamishima, Osamu*

Diffuse neutron scattering measurements have been performed on powder KBr. The oscillatory scheme of the diffuse scattering intensity is explained by the values of correlation effects among thermal displacements of 1st, 2nd and 3rd nearest neighboring atoms which are almost the same as those in other ionic crystals. Force constants among 1st, 2nd and 3rd nearest neighboring atoms are obtained from the correlation effects at 90 K are 0.83 eV/ $AA $^{2}$$ , 0.50 eV/ $AA $^{2}$$ and 0.41 eV/ $AA $^{2}$$ , respectively.

Language	:	English
Journal	:	Solid State Ionics
Volume	:	192
Number	:	1
Pages	:	p.54 - 57
Publication Year/Month	:	2011/06
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Paper URL	:	https://doi.org/10.1016/j.ssi.2010.03.002
DOI for research data	:
Keywords	:	no keyword
Research Facility	:	JRR-3M(研究炉3)
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Article of JAEA R&D Review	:
Cooperating Institute	:	茨城大学

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Registration No. : AA20100155
JAEA Abstracts No. : 39001037
Paper Submission No. : 9298

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