The effect of cr-doping on the structure, dielectric and magnetic properties of BiFeO3and Pb(Fe0.5Sb0.5)O3multiferroics
Raevskaya, S.I.1; Kubrin, S.P.1; Pushkarev, A.V.2; Olekhnovich, N.M.2; Radyush, Y.V.2; Titov, V.V.1; Chen, H.3; Chou, C.-C.4; Malitskaya, M.A.1; Raevski, I.P.1; Stashenko, V.V.1; Sarychev, D.A.1
Conference NameInternational Conference on Physics, Mechanics of New Materials and Their Applications, PHENMA 2017
Source PublicationSpringer Proceedings in Physics
Conference Date10 14, 2017 - 10 16, 2017
Conference PlaceJabalapur, India
Author of SourceSpringer Science and Business Media, LLC
AbstractX-ray diffraction and Mössbauer studies of perovskite BiFe1−xCrxO3and PbFe0.5−xCrxSb0.5O3solid solution ceramics, fabricated under high pressure (4–6 GPa) have been carried out. Two morphotropic phase boundaries were revealed in the BiFe1−xCrxO3system: one between rhombohedral (R3c) and orthorhombic (Pbam) phases at x ≈ 0.5–0.6 and the other between the orthorhombic (Pbam) and monoclinic (C2/c) phases at x ≈ 0.9. It was found out that substitution of Cr3+for Fe3+in BiFeO3does not lead to the appearance of a low-spin state of Fe3+ions, as was predicted by some first-principles calculations. A composition dependence of the magnetic phase transition temperature for BiFe1−xCrxO3is very similar to that in the solid solutions of BiFeO3with non-magnetic ions, implying the lack of magnetic exchange between Fe3+and Cr3+. The reason of such behavior seems to be a difference in their electronic configuration. Addition of Cr to PbFe0.5Sb0.5O3leads to a dramatic lowering and diffusion of the dielectric permittivity maximum and its shift to lower temperatures. Thus, Cr substitution for Fe seems to destroy both ferroelectric and magnetic long-range order in perovskite multiferroics. © 2018, Springer International Publishing AG, part of Springer Nature.
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Document TypeConference paper
CollectionUniversity of Macau
Affiliation1.Research Institute of Physics and Faculty of Physics, Southern Federal University, Rostov-on-Don, Russia;
2.Scientific-Practical Materials Research Centre of NAS of Belarus, Minsk; 220072, Belarus;
3.University of Macau, Macau, China;
4.National Taiwan University of Science and Technology, Taipei, Taiwan
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GB/T 7714
Raevskaya, S.I.,Kubrin, S.P.,Pushkarev, A.V.,et al. The effect of cr-doping on the structure, dielectric and magnetic properties of BiFeO3and Pb(Fe0.5Sb0.5)O3multiferroics[C]//Springer Science and Business Media, LLC,2018:195-208.
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