Article

Arhive, 2012, № 6

Thermophysical Properties of Materials

2012. V. 50. № 6. P. 736–738

Kasenov B.K., Davrenbekov S.Zh., Kasenova Sh.B., Sagintaeva Zh.I., Abildaeva A.Zh., Ermagambet B.T., Isabaeva M.A., Turtubaeva M.O., Zhumadilov E.Zh.

Thermodynamic and electrophysical properties of $\mathrm{LaSrMnFeO_{5,5}}$ ferrite

The isobaric heat capacity of $\mathrm{LaSrMnFeO_{5,5}}$ ferrite is investigated within the temperature range of $298.15$–$673$ K by a calorimetric method. On the curve of the dependence of the heat capacity on temperature, the $\lambda$-type effect is revealed relating to a phase transition of the second kind. Temperature dependencies of the thermodynamic functions $S^0(T)$, $H^0(T)-H^0(298.15)$, and $\Phi^{xx}(T)$ are calculated. The temperature dependencies of permittivity and electrical resistance are studied within the temperature range of $303$–$493$ K, and the results show that the composition under study has semiconductor properties.

Article reference:
Kasenov B.K., Davrenbekov S.Zh., Kasenova Sh.B., Sagintaeva Zh.I., Abildaeva A.Zh., Ermagambet B.T., Isabaeva M.A., Turtubaeva M.O., Zhumadilov E.Zh. Thermodynamic and electrophysical properties of $\mathrm{LaSrMnFeO_{5,5}}$ ferrite, High Temp., 2012. V. 50. № 6. P. 736