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This article is cited in 2 scientific papers (total in 2 papers)
Thermophysical Properties of Materials
Calorimentric investigation of heat capacity of the $\mathrm{ErMFe}_2\mathrm{O}_{5.5}\,(\text{M} = \mathrm{Mg}$, $\mathrm{Ca}$, $\mathrm{Sr}$, $\mathrm{Ba})$ ferrites in the temperature range of $298.15$–$673$ K and calculation of their thermodynamic functions
B. K. Kasenov, Zh. I. Sagintaeva, Sh. B. Kasenova, E. E. Kuanyshbekov, A. A. Seisenova Zh. Abishev Chemical-Metallurgical Institute, Karaganda
Abstract:
We present the data of the calorimetric investigations of the $\mathrm{ErMFe}_2\mathrm{O}_{5.5}\,(\text{M} = \mathrm{Mg}$, $\mathrm{Ca}$, $\mathrm{Sr}$, $\mathrm{Ba})$ ferrites and calculation of their thermodynamic functions. As a result of calorimetric studies of the heat capacity, within the temperature range of $298.15$–$673$ K, we discover, at the curves of the $C_p \sim f(T)$ dependence, the second kind $\lambda$-shaped phase transitions at the following temperatures: $373$ K – $\mathrm{ErMgFe}_2\mathrm{O}_{5.5}$, $398$ K – $\mathrm{ErCaFe}_2\mathrm{O}_{5.5}$; $423$ K – $\mathrm{ErBaFe}_2\mathrm{O}_{5.5}$, $398$ K – $\mathrm{ErSrFe}_2\mathrm{O}_{5.5}$. We derived the equations of the temperature dependence of the heat capacity for the ferrites with account for these phase transformations.
Received: 07.03.2013
Citation:
B. K. Kasenov, Zh. I. Sagintaeva, Sh. B. Kasenova, E. E. Kuanyshbekov, A. A. Seisenova, “Calorimentric investigation of heat capacity of the $\mathrm{ErMFe}_2\mathrm{O}_{5.5}\,(\text{M} = \mathrm{Mg}$, $\mathrm{Ca}$, $\mathrm{Sr}$, $\mathrm{Ba})$ ferrites in the temperature range of $298.15$–$673$ K and calculation of their thermodynamic functions”, TVT, 53:3 (2015), 378–382; High Temperature, 53:3 (2015), 358–362
Linking options:
https://www.mathnet.ru/eng/tvt4968 https://www.mathnet.ru/eng/tvt/v53/i3/p378
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Abstract page: | 228 | Full-text PDF : | 68 | References: | 39 | First page: | 3 |
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