1. 
|
Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : MELERO J. J., BARTOLOME J., BURRIEL R., ALEKSANDROVA I. P., PRIMAK S.
Заглавие : HEAT-CAPACITY MEASUREMENT OF THE SUCCESSIVE PHASE-TRANSITIONS IN CS2ZNI4
Разночтения заглавия :us: Heat capacity measurement of the successive phase transitions in Cs2ZnI4
Место публикации : Solid State Commun.: PERGAMON-ELSEVIER SCIENCE LTD, 1995. - Vol. 95, Is. 4. - P201-206. - ISSN 0038-1098, DOI 10.1016/0038-1098(95)00261-8
Примечания : Cited References: 20
Предметные рубрики: INCOMMENSURATE PHASE
SEQUENCE
CRYSTALS
CS2CDI4
Ключевые слова (''Своб.индексиров.''): ferroelectrics--heat capacity--phase transitions--incommensurate phases
Аннотация: The heat capacity of a Cs2ZnI4 single crystal has been measured by means of AC calorimetry. Three anomalies have been detected corresponding to a normal to inconmensurate phase transition at T-I = 116.9+/-0.1 K, an incommensurate to commensurate lock-in transition at T-L = 107.58+/-0.05 K, and a structural transition from a commensurate orthorhombic to a monoclinic phase at T-C = 93.77+/-0.05 K with thermal hysteresis. The lock-in transition has the peculiarity of being discontinuous but not showing any measurable hysteresis. After comparison with the Landau model predictions for the heat capacity, derived for the k(Delta) = (1/2 + Delta)a* case, it is concluded that Cs2ZnI4 lies close to the Lifschitz point of coexistence of the normal, incommensurate and commensurate phases.
WOS,
Scopus
Найти похожие
|
Главная
Каталог книг и брошюр библиотеки ИФ СО РАН