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Teplofizika vysokikh temperatur, 2007, Volume 45, Issue 5, Pages 713–716
(Mi tvt1182)
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Thermophysical Properties of Materials
Heat Capacity and thermodynamic functions of $\text{DyMe}^{\text{II}}\text{Cr}_2\text{O}_{5.5}(\text{Me}^{\text{II}}$ – $\text{Mg}$, $\text{Ca})$ in the range from $298.15$ to $673$ K
B. B. Tumataeva, Sh. B. Kasenova, B. K. Kasenov, E. S. Mustafin, Zh. I. Sagintaeva, S. Zh. Davrenbekov JSC International Research and Production Holding "PhytoChemistry"
Abstract:
The calorimetric method is used to investigate the heat capacity of $\text{DyMe}^{\text{II}}\text{Cr}_2\text{O}_{5.5}(\text{Me}^{\text{II}}$ – $\text{Mg}$, $\text{Ca})$ chromites in the range from $298.15$ to $673$ K. The $C^0_p \sim f(T)$ curves exhibit $\lambda$-like effects at $348$, $548$ К for $\text{DyMe}\text{Mg}\text{Cr}_2\text{O}_{5.5}$ and at $473$ K for $\text{DyMe}\text{Ca}\text{Cr}_2\text{O}_{5.5}$, which apparently relate to second-order phase transitions. The temperature dependences are calculated for thermodynamic functions $C^0_p(T)$, $H^0(T) - H^0(298.15)$, $S^0(T)$ and $\Phi^{**}(T)$.
Received: 28.03.2006
Citation:
B. B. Tumataeva, Sh. B. Kasenova, B. K. Kasenov, E. S. Mustafin, Zh. I. Sagintaeva, S. Zh. Davrenbekov, “Heat Capacity and thermodynamic functions of $\text{DyMe}^{\text{II}}\text{Cr}_2\text{O}_{5.5}(\text{Me}^{\text{II}}$ – $\text{Mg}$, $\text{Ca})$ in the range from $298.15$ to $673$ K”, TVT, 45:5 (2007), 713–716; High Temperature, 45:5 (2007), 645–648
Linking options:
https://www.mathnet.ru/eng/tvt1182 https://www.mathnet.ru/eng/tvt/v45/i5/p713
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Abstract page: | 133 | Full-text PDF : | 49 |
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