Abstract
The local structure of CH3NH3I around the I-ion in Phase a ' and 5 was studied by iodine K-edge EXAFS. The crystal structure in Phase α ' was redetermined by single crystal X-ray diffraction. The Debye-Waller factor σ(2)derived from EXAFS spectra shows an anomalous behavior around the order-disorder transition temperature from Phase 5 to α'. 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.
| Original language | English |
|---|---|
| Pages (from-to) | 876-880 |
| Number of pages | 5 |
| Journal | Zeitschrift fur Naturforschung - Section A Journal of Physical Sciences |
| Volume | 50 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - Sep 1 1995 |
Keywords
- Crystal structure
- EXAFS
- Phase transition
- X-ray diffraction
ASJC Scopus subject areas
- Mathematical Physics
- Physics and Astronomy(all)
- Physical and Theoretical Chemistry
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Ishida, H., Maeda, H., Hirano, A., Fujimoto, T., Kubozono, Y., Kashino, S., & Emura, S. (1995). EXAFS Study on the Phase Transition (Phase α′ - δ ) in CH3NH3I. Zeitschrift fur Naturforschung - Section A Journal of Physical Sciences, 50(9), 876-880. https://doi.org/10.1515/zna-1995-0914