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Study of the structural phase transitions of (CH3NH3)3Sb2Cl9 (MACA) and (CH3NH3)3Bi2Cl9 (MACB) by infrared spectroscopy

✍ Scribed by G. Bator; R. Jakubas; Z. Malarski

Publisher
Elsevier Science
Year
1991
Tongue
English
Weight
337 KB
Volume
246
Category
Article
ISSN
0022-2860

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πŸ“œ SIMILAR VOLUMES

Low-Temperature Phase Transition and Str
Low-Temperature Phase Transition and Structural Relationships of (CH3NH3)3Bi2Cl9
✍ I. Belkyal; R. Mokhlisse; B. Tanouti; K.-F. Hesse; W. Depmeier πŸ“‚ Article πŸ“… 2000 πŸ› Elsevier Science 🌐 English βš– 162 KB

CH 3 NH 3 ) 3 Bi 2 Cl 9 exhibits two phase transitions at T c 1 ‫؍‬ 349 K and T c 2 ‫؍‬ 247 K. The upper transition is probably isomorphous and reveals itself by the anomalous evolution of the lattice parameters. This behavior is explained to be due to increasing thermal motion of the methylammonium