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Mössbauer Study of the Effect of Cation Substitutions on the Magnetic Phase Transitions in BiFe1–xCrxO3 and (1–x)BiFeO3–xPbFe0.5Sb0.5O3 Solid Solutions

Mössbauer Study of the Effect of Cation Substitutions on the Magnetic Phase Transitions in... —The concentration dependences of the magnetic phase transition temperature TN, determined based on the changes in Mössbauer spectra, were investigated for a BiFeO3 solid solution with ordered perovskite PbFe0.5Sb0.5O3 and for a disordered BiFe1 – xCrxO3 solid solution. It is established that the magnetic-order type in BiFe1 – xCrxO3 changes from antiferromagnetic to spin-glass at a higher degree of Fe-sublattice dilution in comparison with the PbFe0.5Nb0.5O3-based solid solutions presumably because of the smaller BiFeO3 lattice parameter. Due to the local ordering of Fe3+ and Sb5+ ions, the TN value decreases more rapidly (as compared to BiFe1 – xCrxO3) with a decrease in the Fe3+ content in the lattice of (1 – x)BiFeO3– xPbFe0.5Sb0.5O3 solid solutions. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Crystallography Reports Springer Journals

Mössbauer Study of the Effect of Cation Substitutions on the Magnetic Phase Transitions in BiFe1–xCrxO3 and (1–x)BiFeO3–xPbFe0.5Sb0.5O3 Solid Solutions

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References (23)

Publisher
Springer Journals
Copyright
Copyright © Pleiades Publishing, Inc. 2020
ISSN
1063-7745
eISSN
1562-689X
DOI
10.1134/S1063774520030165
Publisher site
See Article on Publisher Site

Abstract

—The concentration dependences of the magnetic phase transition temperature TN, determined based on the changes in Mössbauer spectra, were investigated for a BiFeO3 solid solution with ordered perovskite PbFe0.5Sb0.5O3 and for a disordered BiFe1 – xCrxO3 solid solution. It is established that the magnetic-order type in BiFe1 – xCrxO3 changes from antiferromagnetic to spin-glass at a higher degree of Fe-sublattice dilution in comparison with the PbFe0.5Nb0.5O3-based solid solutions presumably because of the smaller BiFeO3 lattice parameter. Due to the local ordering of Fe3+ and Sb5+ ions, the TN value decreases more rapidly (as compared to BiFe1 – xCrxO3) with a decrease in the Fe3+ content in the lattice of (1 – x)BiFeO3– xPbFe0.5Sb0.5O3 solid solutions.

Journal

Crystallography ReportsSpringer Journals

Published: May 27, 2020

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