Abstract
Thermophysical, magnetic, and dielectric properties of multiferroic BiFeO3 and Bi0.95La0.05FeO3 ceramic compounds were comprehensively studied. Anomalies of the permittivity near an antiferromagnetic phase transition related to the structural variations were detected. The temperature T N was determined from the temperature dependences of the thermal expansion coefficient, heat capacity, and differential susceptibility. It is shown that the transition point is shifted to higher temperatures as the rare-earth La ion substitutes for Bi. It is established that an insignificant substitution of lanthanum for bismuth enhances the magnetic properties of bismuth ferrite and the magnetodielectric effect.
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Original Russian Text © A.A. Amirov, A.B. Batdalov, S.N. Kallaev, Z.M. Omarov, I.A. Verbenko, O.N. Razumovskaya, L.A. Reznichenko, L.A. Shilkina, 2009, published in Fizika Tverdogo Tela, 2009, Vol. 51, No. 6, pp. 1123–1126.
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Amirov, A.A., Batdalov, A.B., Kallaev, S.N. et al. Specific features of the thermal, magnetic, and dielectric properties of multiferroics BiFeO3 and Bi0.95La0.05FeO3 . Phys. Solid State 51, 1189–1192 (2009). https://doi.org/10.1134/S1063783409060183
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DOI: https://doi.org/10.1134/S1063783409060183