Heat capacity and thermodynamic functions of Gd(VO4)0.5(PO4)0.5 solid solution in the low-temperature region

Abstract

A series of Gd(VO 4 ) 1 -x (PO 4 ) x solid solutions with a xenotime structure was synthesized. The heat capacity of a Gd(VO 4 ) 0.5 (PO 4 ) 0.5 solid solution sample was measured by adiabatic calorimetry in the low tem perature region (6-348 K). The thermodynamic functions were calculated within the studied temperature range.