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JOURNALS // Teplofizika vysokikh temperatur // Archive

TVT, 2012 Volume 50, Issue 6, Pages 789–792 (Mi tvt464)

This article is cited in 4 papers

Thermophysical Properties of Materials

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

B. K. Kasenova, S. Zh. Davrenbekova, Sh. B. Kasenovaa, Zh. I. Sagintaevaa, A. Zh. Abildaevaa, B. T. Ermagambetb, M. A. Isabaevac, M. O. Turtubaevac, E. Zh. Zhumadilovd

a Abishev Chemicometallurgical Institute, National Center on Complex Processing of Mineral Raw Materials of the Republic of Kazakhstan, Ermekov ul. 63, Karaganda, 100009, Republic of Kazakhstan
b Kazakh University for Technology and Business, pr. Respubliki 54/2, Astana, 010000, Republic of Kazakhstan
c Toraigyrov Pavlodar State University, Lomova ul. 64, Pavlodar, 140008, Republic of Kazakhstan
d Karaganda State Technical University, pr. Mira 56, Karaganda, 100009, Republic of Kazakhstan

Abstract: 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.

UDC: 546.65:711/.717+536.8

Received: 08.02.2012


 English version:
High Temperature, 2012, 50:6, 736–738

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