Author(s)

S’Nya Sanchez¹, Mandy Guinn¹, Uttam S. Phuyal², Gurjot S. Dhaliwal³, Ram Krishna Hona^1*

¹Environmental Science Department, United Tribes Technical College, Bismarck, ND, USA.
²School of Arts and Science, University of Mt. Olive, Mount Olive, NC, USA.
³Intertribal Research and Resource Center, United Tribes Technical College, Bismarck, ND, USA.

A₂FeCoO_6-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 Sr₂FeCoO_6-δ is found to be the highest, and that of Ca₂FeCoO_6-δ is the lowest while CaSrFeCoO_6-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 Ca₂FeCoO_6-δ to CaSrFeCoO_6-δ to Sr₂FeCoO_6-δ.

Perovskite Oxide, Specific Heat Capacity, Oxygen Vacancy, XRD, Vacancy Order

Sanchez, S. , Guinn, M. , Phuyal, U. , Dhaliwal, G. and Hona, R. (2023) Specific Heat Capacity of A₂FeCoO_6-δ (A = Ca or Sr). Journal of Materials Science and Chemical Engineering, 11, 1-10. doi: 10.4236/msce.2023.114001.