TITLE:
Specific Heat Capacity of A2FeCoO6-δ (A = Ca or Sr)
AUTHORS:
S’Nya Sanchez, Mandy Guinn, Uttam S. Phuyal, Gurjot S. Dhaliwal, Ram Krishna Hona
KEYWORDS:
Perovskite Oxide, Specific Heat Capacity, Oxygen Vacancy, XRD, Vacancy Order
JOURNAL NAME:
Journal of Materials Science and Chemical Engineering,
Vol.11 No.4,
April
14,
2023
ABSTRACT: A2FeCoO6-δ (A = Ca or Sr) is synthesized by the solid-state synthesis method and their specific heat capacities are evaluated at 40˚C using a heat flow meter. The effect of the A-cation size on the specific heat capacity of these compounds is observed. The specific heat capacity of Sr2FeCoO6-δ is found to be the highest, and that of Ca2FeCoO6-δ is the lowest while CaSrFeCoO6-δ shows the intermediate value. The specific heat capacity decreases with the decrease of the average A-site ionic radius, demonstrating the relationship between heat capacity and A-site ionic radius. The relationship between specific heat capacity and molar mass is also confirmed as the δ value decreases or molar mass increases from Ca2FeCoO6-δ to CaSrFeCoO6-δ to Sr2FeCoO6-δ.