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Kolekcje
Inne
Dilatometric, dielectric and NMR studies of structural phase transitions of the (CH3NH3)3Bi2Cl9 (MACB) crystals.
Autorzy
Rok wydania
1996
Czasopismo
Journal of Molecular Structure
Numer woluminu
385
Strony
145-151
DOI
10.1016/S0022-2860(96)09437-9
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
The phase transitions and molecular motions of the methylammonium cations were investigated in the (CH3NH3)3Bi2Cl9 (MACB) crystal by dilatometric and dielectric measurements, and by the measurements of the 1H spin-lattice relaxation times and second moment of the 1H NMR absorptions over a wide temperature range. Structural phase transitions, weakly first order at 247 K (III ↔ II) and continuous at 352 K (II ↔ I), were detected by the dilatometric technique. The 1H NMR measurements revealed the presence of the uniaxial reorientations of the three non-equivalent methylammonium cations in the lowest temperature phase (III).
Słowa kluczowe
NMR spectroscopy, Dilatometric measurements, Dielectric measurements, Phase transitions, MACB crystal
Adres publiczny
https://doi.org/10.1016/S0022-2860(96)09437-9
Strona internetowa wydawcy
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