R. G. Mitarov, S. N. Kallaev, Z. M. Omarov, K. G. Abdulvakhidov, “Heat capacity of the PbFe$_{0.5}$Nb$_{0.5}$O$_3$ multiferroic”, Fizika Tverdogo Tela, 2015, Volume 57, Issue 4,Pages 710

This article is cited in 1 paper

Ferroelectricity

Heat capacity of the PbFe$_{0.5}$Nb$_{0.5}$O$_3$ multiferroic

R. G. Mitarov^a, S. N. Kallaev^bc, Z. M. Omarov^b, K. G. Abdulvakhidov^d

^a Daghestan State Technical University
^b Institute of Physics, Daghestan Scientific Centre, Russian Academy of Sciences
^c Daghestan State University, Makhachkala
^d Research Institute of Physics, Southern Federal University

Abstract: The temperature dependence of the heat capacity of the PbFe$_{0.5}$Nb$_{0.5}$O$_3$ multiferroic has been studied in the temperature range of 130–780 K. An excess heat capacity has been observed in the temperature range of 250–780 K. It has been shown that the temperature dependence of the excess heat capacity is associated with the manifestation of the Schottky effect in three-level systems.

Received: 20.10.2014