Calorimetric study of cesium hexafluoroarsenate CsAsF6 at elevated temperatures

Autor:	K. S. Gavrichev, V. N. Plakhotnik, G. A. Sharpataya, V. M. Gurevich, Andrey V. Khoroshilov
Rok vydání:	2005
Předmět:	Phase transition Differential scanning calorimetry chemistry Caesium Enthalpy Thermodynamics chemistry.chemical_element Physical and Theoretical Chemistry Condensed Matter Physics Thermal analysis Heat capacity Isothermal process Entropy (order and disorder)
Zdroj:	Journal of Thermal Analysis and Calorimetry. 82:339-346
ISSN:	1572-8943 1388-6150
DOI:	10.1007/s10973-005-0900-6
Popis:	The heat capacity of cesium hexafluoroarsenate, CsAsF6, was measured from 300 to 850 K by differential scanning calorimetry. The results indicate that the structural transformation from the rhombohedral to cubic phase, occurring in the range 235-360 K, relates to gradual transition completed isothermally. The enthalpy of the transition is 6.015±0.186 kJ mol-1, and its entropy is 17.21±0.58 J K-1 mol-1≈Rln8, which suggests that this structural transition belongs to the order-disorder type. The thermodynamic properties of CsAsF6 were evaluated in the range 10-760 K.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4aeea5887481b38b3d106076cd82c89d https://doi.org/10.1007/s10973-005-0900-6 Zobrazit plný text záznamu Plný text ve formátu PDF