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Fizika Tverdogo Tela, 2016 Volume 58, Issue 4, Pages 664–666 (Mi ftt10007)

This article is cited in 6 papers

Ferroelectricity

Dielectric properties and specific heat of Bi$_{1-x}$Sm$_{x}$FeO$_{3}$ multiferroics

S. N. Kallaevab, S. A. Sadykova, Z. M. Omarovb, A. Ya. Kurbaitaevb, L. A. Reznichenkoc, S. W. Khasbulatovc

a Daghestan State University, Makhachkala
b Daghestan Institute of Physics after Amirkhanov, Makhachkala, Dagestan, Russia
c Research Institute of Physics, Southern Federal University, Rostov-on-Don

Abstract: The specific heat and dielectric permittivity of Bi$_{1-x}$Sm$_{x}$FeO$_{3}$ ($x$ = 0 – 0.30) multiferroics have been studied in the temperature range of 300–800 K. A slight substitution of bismuth with samarium is established to cause a considerable shift in the antiferromagnetic phase transition temperature and to an increase in the specific heat over a wide temperature range. Other anomalies typical of phase transitions have been found in the temperature dependences of the specific heat and dielectric permittivity for the compounds with $x$ = 0.10 and 0.15 at $T\approx$ 735 and 495 K, respectively. The results of the studies of the specific heat have been discussed together with the data of the structural investigations.

Keywords: Ferrite, Bismuth, Dielectric Permittivity, Wide Temperature Range, Samarium.

Received: 14.07.2015


 English version:
Physics of the Solid State, 2016, 58:4, 682–684

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