Effect of Sm substitution on ferroelectric and magnetic properties of BiFeO3


Investigation of crystal structure and multiferroic properties of polycrystalline Bi1-xSmxFeO3 (0-1 <= x <= 0.2) samples was performed by X-ray diffraction, piezoresponse force microscopy and SQUID-magnetometry techniques. It was shown that increasing samarium content induced a polar-to-nonpolar phase transition near x = 0.2. Within the polar region, a rhombohedral and two orthorhombic modifications of Bi1-xSmxFeO3 were found. It was shown that samarium substitution resulted in the appearance of spontaneous magnetization, which was significantly enhanced upon the composition-driven transition from a rhombohedral to an orthorhombic phase. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.




Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering


Khomchenko, VA; Paixao, JA; Shvartsman, VV; Borisov, P; Kleemann, W; Karpinsky, DV; Kholkin, AL

nossos autores


V.A.K. is grateful to the Foundation for Science and Technology of Portugal (FCT) for financial support. P.B. is grateful to the Deutsche Forschungsgemeinschaft (DFG) for financial support through SFB 491. The work was performed within the EC-funded STREP

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