The effect of cr-doping on the structure, dielectric and magnetic properties of BiFeO3 and Pb(Fe0.5Sb0.5)O3 multiferroics

S. I. Raevskaya, S. P. Kubrin, A. V. Pushkarev, N. M. Olekhnovich, Y. V. Radyush, V. V. Titov, Haydn Chen, C. C. Chou, M. A. Malitskaya, I. P. Raevski*, V. V. Stashenko, D. A. Sarychev

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

X-ray diffraction and Mössbauer studies of perovskite BiFe1−xCrxO3 and PbFe0.5−xCrxSb0.5O3 solid solution ceramics, fabricated under high pressure (4–6 GPa) have been carried out. Two morphotropic phase boundaries were revealed in the BiFe1−xCrxO3 system: 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 BiFeO3 does 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−xCrxO3 is very similar to that in the solid solutions of BiFeO3 with 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 PbFe0.5Sb0.5O3 leads 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.

Original languageEnglish
Title of host publicationAdvanced Materials - Proceedings of the International Conference on "Physics and Mechanics of New Materials and Their Applications", PHENMA 2017
EditorsShun-Hsyung Chang, Ivan A. Parinov, Vijay K. Gupta
PublisherSpringer Science and Business Media, LLC
Pages195-208
Number of pages14
ISBN (Print)9783319789187
DOIs
StatePublished - 1 Jan 2018
EventInternational Conference on Physics, Mechanics of New Materials and Their Applications, PHENMA 2017 - Jabalapur, India
Duration: 14 Oct 201716 Oct 2017

Publication series

NameSpringer Proceedings in Physics
Volume207
ISSN (Print)0930-8989
ISSN (Electronic)1867-4941

Conference

ConferenceInternational Conference on Physics, Mechanics of New Materials and Their Applications, PHENMA 2017
CountryIndia
CityJabalapur
Period14/10/1716/10/17

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