Heat Capacity, Enthalpy and Entropy of Strontium Niobates Sr2Nb10O27 and Sr5Nb4O15

Abstract

Heat capacity and enthalpy increments of strontium niobates Sr2Nb10O27 and Sr5Nb4O15 were measured by the relaxation time method (2-300 K), DSC (260-360 K) and drop calorimetry (670-1400 K). The molar entropies at 298.15 K were evaluated from the low temperature heat capacity measurements.

Keywords

• Capacity
• Enthalpy
• Entropy
• Strontium
• Niobates
• Sr2Nb10O27
• Sr5Nb4O15