EXAFS STUDY ON THE PHASE-TRANSITION (PHASE-ALPHA' PHASE-DELTA) IN CH3NH3I

被引：9

作者：

ISHIDA, H ^{[1
]}

MAEDA, H ^{[1
]}

HIRANO, A ^{[1
]}

FUJIMOTO, T ^{[1
]}

KUBOZONO, Y ^{[1
]}

KASHINO, S ^{[1
]}

EMURA, S ^{[1
]}

机构：

[1] OSAKA UNIV, INST SCI & IND RES, IBARAKI, OSAKA 567, JAPAN

来源：

ZEITSCHRIFT FUR NATURFORSCHUNG SECTION A-A JOURNAL OF PHYSICAL SCIENCES | 1995年 / 50卷 / 09期

关键词：

CRYSTAL STRUCTURE; EXAFS; PHASE TRANSITION; X-RAY DIFFRACTION;

D O I：

10.1515/zna-1995-0914

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The local structure of CH3NH3I around the I- ion in Phase alpha' and delta was studied by iodine K-edge EXAFS. The crystal structure in Phase alpha' was redetermined by single crystal X-ray diffraction. The Debye-Waller factor sigma((2)) derived from EXAFS spectra shows an anomalous behavior around the order-disorder transition temperature from Phase delta to alpha'. The phase transition has been interpreted as the disordering process which involves not only the H atoms but also the C atoms in the cation.

引用

页码：876 / 880

页数：5

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