Measurement of Specific Heat of Boron Monophosphide by AC Calorimetry

Abstract

A process to determine the absolute value of the heat capacity of a thin slab is described. The specific heat of BP at constant pressure is found to be 7.5±0.3 cal/K·mol at 300 K. The temperature dependence was measured 300 K to 800 K. Some properties of BP are discussed and relevant parameters are estimated: Debye temperature, θ=960±50 K; compressibility, K≃5×10-13 cm2/dyn; Grüneisen constant, γ=0.8.