Thermodynamic Characteristics of SmAlO3 in the Range 55–300 K

    

I. M. Frantsevich Institute for Problems of Materials Science of the NAS of Ukraine, Krzhizhanovsky str., 3, Kyiv, 03142, Ukraine
Powder Metallurgy - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2012, #03/04
http://www.materials.kiev.ua/article/1014

Abstract

The heat capacity of SmAlO3 is investigated for the first time in the temperature range 60–300 K by adiabatic calorimetry. The values of heat capacity, entropy, enthalpy, and reduced Gibbs energy are determined in standard conditions: С0p(298,15 К) = 96,32 ± 0,39 J · mol-1 x К–1; S0(298,15 К) = 96,68 ± 0,77 J · mol-1 · К-1; Φ0(298,15 К) = 44,34 ± 0,67 J x mol-1 · К–1; H0(298,15 К) – H0(0 К)= 15604 ± 78 J · mol-1. It is assumed that the R–O bond strength (R is a rare-earth metal) influences the heat capacity of perovskite-like aluminates.


ENTHALPY, ENTROPY, HEAT CAPACITY, REDUCED GIBBS ENERGY, SAMARIUM ALUMINATE, THERMODYNAMICS