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This article is cited in 2 scientific papers (total in 2 papers)
Thermophysical Properties of Materials
Thermodynamic characteristics of cobaltite(nickelite)-cuprate-manganites $\rm LaSrCoCuMnO_6$ and $\rm LaSrNiCuMnO_6$
B. K. Kasenov, Sh. B. Kasenova, Zh. I. Sagintaeva, E. E. Kuanyshbekov, G. Khabdolda Zh. Abishev Chemical-Metallurgical Institute, Karaganda
Abstract:
The temperature dependences of the specific heat of nanoscale (nanocluster) cobaltite(nickelite)-cuprate-manganites $\rm LaSrCoCuMnO_6$ and $\rm LaSrNiCuMnO_6$ have been studied via experimental dynamic calorimetry in the range of $298.15$–$673$ K. The temperature dependences of the specific heat $C^{\circ}_p \sim f(T)$ of $\rm LaSrCoCuMnO_6\,($at $323$ and $523$ K$)$ and $\rm LaSrNiCuMnO_6\,($at $348$ K$)$ exhibit anomalous jumps in the specific heat, which are likely due to the second-order phase transitions. Based on the experimental data on $C^{\circ}_(T)$ and the calculated value of entropy $S^{\circ}(298.15)$, the temperature dependences of the specific heat and thermodynamic functions of the studied compounds are calculated in the temperature range of $298.15$–$673$ K.
Received: 21.02.2019 Revised: 16.08.2019 Accepted: 24.12.2019
Citation:
B. K. Kasenov, Sh. B. Kasenova, Zh. I. Sagintaeva, E. E. Kuanyshbekov, G. Khabdolda, “Thermodynamic characteristics of cobaltite(nickelite)-cuprate-manganites $\rm LaSrCoCuMnO_6$ and $\rm LaSrNiCuMnO_6$”, TVT, 58:2 (2020), 208–214; High Temperature, 58:2 (2020), 190–196
Linking options:
https://www.mathnet.ru/eng/tvt11180 https://www.mathnet.ru/eng/tvt/v58/i2/p208
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