A comprehensive study of the heat capacity of CsF from T = 5 K to T = 1400 K

In this study we present new experimental heat capacity data of solid and liquid phase of CsF covering the temperature range from 5 K to 1400 K. The low temperature data were obtained by adiabatic calorimetry and compared with the theoretical heat capacity computed from ab initio anharmonic crystal approximation. The absolute entropy at 298.15 K determined based on the presented results is 93.60 J/K/mol. The high temperature heat capacity was measured using a drop calorimeter and the data for the solid phase revealed significant excess properties. The data for the liquid phase were correlated with the molecular dynamic simulation obtaining a good agreement. The recommended molar heat capacity of the CsF solid phase is: Cp=24.291 + 6.4607E-2 T +589981/T2

BENES Ondrej;  SEDMIDUBSKY D.;  BEILMANN Markus;  VALU Sorin;  CAPELLI Elisa;  SALANNE Mathieu;  NICHENKO Sergii;  KONINGS Rudy; 

2012-10-18

ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD

JRC69984

0021-9614,   

https://publications.jrc.ec.europa.eu/repository/handle/JRC69984,   

10.1016/j.jct.2012.08.003,