Thermodynamic Characteristics of Rare-Earth Monosilicides at High-Temperatures

Abstract

The heat capacity components for some experimentally studied rare-earth monosilicides in the range of middle and high temperatures are analyzed. Patterns of variation in temperatures and enthalpies of melting in a series of compounds from LaSi to LuSi are established. An equation is proposed to determine the heat capacity C_р and high-temperature C_р and enthalpies and entropies of melting are calculated for eight LnSi compounds that are still to be experimentally studied (Ln = Ce, Nd, Pm, Sm, Tb, Dy, Ho, Tm).