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JOURNALS // Teplofizika vysokikh temperatur // Archive

TVT, 2019 Volume 57, Issue 4, Pages 518–523 (Mi tvt11068)

This article is cited in 3 papers

Thermophysical Properties of Materials

$\rm Bi_{0.9}\rm M_{0.1}\rm FeO_3\,(\rm M - \rm La{,}\,\rm Pr{,}\,\rm Nd{,}\,\rm Sm)$ multiferroics: thermophysical properties at high temperatures

G. G. Gadzhieva, Z. M. Omarova, M.-R. M. Magomedovab, Kh. Kh. Abdullaeva, A. A. Amirovaa, L. A. Reznichenkoc, S. W. Khasbulatovc

a Daghestan Institute of Physics after Amirkhanov
b Dagestan State Medical University, Makhachkala, Russia
c Research Institute of Physics, Southern Federal University

Abstract: Comprehensive studies of the thermophysical properties (thermal conductivity, thermal diffusivity, heat capacity, thermal expansion coefficient) of solid solutions of the $\rm Bi_{0.9}\rm M_{0.1}\rm FeO_3\,(\rm M - \rm La{,}\,\rm Pr{,}\,\rm Nd{,}\,\rm Sm)$ multiferroics have been carried out within the temperature range of $300$$800$ K. Anomalies of the thermophysical properties caused by phase transitions are observed within the Néel temperature domain $(640$$650$ K$)$. Formulas are proposed for the calculation of the studied thermophysical properties within the domains of the structural phase transitions, and a clear correlation is established for the dependences of the thermophysical properties within the domain of the structural phase transitions.

UDC: 532.529

Received: 04.06.2018
Revised: 24.07.2018
Accepted: 25.12.2018

DOI: 10.1134/S0040364419040057


 English version:
High Temperature, 2019, 57:4, 477–481

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