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A novel perovskite oxide chemically designed to show multiferroic phase boundary with room-temperature magnetoelectricity

Abstract : There is a growing activity in the search of novel single-phase multiferroics that could finally provide distinctive magnetoelectric responses at room temperature, for they would enable a range of potentially disruptive technologies, making use of the ability of controlling polarization with a magnetic field or magnetism with an electric one (for example, voltage-tunable spintronic devices, uncooled magnetic sensors and the long-searched magnetoelectric memory). A very promising novel material concept could be to make use of phase-change phenomena at structural instabilities of a multiferroic state. Indeed, large phase-change magnetoelectric response has been anticipated by a first-principles investigation of the perovskite BiFeO3 -BiCoO3 solid solution, specifically at its morphotropic phase boundary between multiferroic polymorphs of rhombohedral and tetragonal symmetries. Here, we report a novel perovskite oxide that belongs to the BiFeO3 -BiMnO3 -PbTiO3 ternary system, chemically designed to present such multiferroic phase boundary with enhanced ferroelectricity and canted ferromagnetism, which shows distinctive room-temperature magnetoelectric responses. © The Author(s) 2016.
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https://hal-univ-rennes1.archives-ouvertes.fr/hal-01381129
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Submitted on : Friday, October 14, 2016 - 9:18:29 AM
Last modification on : Wednesday, October 14, 2020 - 3:40:09 AM

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C.M. Fernández-Posada, A. Castro, Jean-Michel Kiat, F. Porcher, O. Peña, et al.. A novel perovskite oxide chemically designed to show multiferroic phase boundary with room-temperature magnetoelectricity. Nature Communications, Nature Publishing Group, 2016, 7 (1), pp.12772. ⟨10.1038/ncomms12772⟩. ⟨hal-01381129⟩

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