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Article Dans Une Revue Materials Science and Engineering: B Année : 2021

Magnetic properties across the YMnO3-BiFeO3 system designed for phase-change magnetoelectric response

Résumé

Perovskite systems with structurally different multiferroic end members are being extensively investigated, because large phase-change magnetoelectric responses have been anticipated at the morphotropic phase boundaries (MPBs) between polymorphic forms with differentiated ferroic orderings. (1-x) YMnO3-x BiFeO3 is one such system, for which two continuous perovskite solid solutions with rhombohedral R3c and orthorhombic Pnma symmetries are present, and coexist across a wide compositional range. This might be a discontinuous MPB between a non-polar and a polar phase, at which the orthorhombic to rhombohedral transition may be electrically induced with a distinctive magnetic signature. In order to explore this possibility, magnetic properties have been characterized across the whole system, and relationships between perovskite crystal structure and magnetism have been established. Distinctive evolutions within each solid solution are revealed that define a region between x = 0.6 and 0.9, where a non-polar orthorhombic ferromagnetic phase coexists with a polar rhombohedral antiferromagnetic one at room temperature.
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Dates et versions

hal-03157981 , version 1 (07-04-2021)

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M. Algueró, J.A. Quintana-Cilleruelo, O. Peña, A. Castro. Magnetic properties across the YMnO3-BiFeO3 system designed for phase-change magnetoelectric response. Materials Science and Engineering: B, 2021, 266, pp.115055. ⟨10.1016/j.mseb.2021.115055⟩. ⟨hal-03157981⟩
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