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Specific Heat Capacity of A<sub>2</sub>FeCoO<sub>6-<i>δ</i></sub> (A = Ca or Sr)
Environmental Science Department, United Tribes Technical College, Bismarck, ND, USA
Environmental Science Department, United Tribes Technical College, Bismarck, ND, USA
School of Arts and Science, University of Mt. Olive, Mount Olive, NC, USA
Intertribal Research and Resource Center, United Tribes Technical College, Bismarck, ND, USA
Environmental Science Department, United Tribes Technical College, Bismarck, ND, USA
- 1 Environmental Science Department, United Tribes Technical College, Bismarck, ND, USA
- 2 Environmental Science Department, United Tribes Technical College, Bismarck, ND, USA
- 3 School of Arts and Science, University of Mt. Olive, Mount Olive, NC, USA
- 4 Intertribal Research and Resource Center, United Tribes Technical College, Bismarck, ND, USA
- 5 Environmental Science Department, United Tribes Technical College, Bismarck, ND, USA
Journal of Materials Science and Chemical Engineering·Volume 11 (2023)·Pages 1–10·Published 14 April 2023·DOI10.4236/msce.2023.114001
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Abstract
A 2 FeCoO 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 Sr 2 FeCoO 6- δ is found to be the highest, and that of Ca 2 FeCoO 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 Ca 2 FeCoO 6- δ to CaSrFeCoO 6- δ to Sr 2 FeCoO 6- δ .
KeywordsPerovskite OxideSpecific Heat CapacityOxygen VacancyXRDVacancy Order
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