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

AuthorsFernández-Posada, Carmen M.; Castro, Alicia ; Kiat, Jean-Michel; Porcher, Florence; Peña, Octavio; Algueró, Miguel ; Amorín, Harvey
KeywordsFerroelectrics and multiferroics
Magnetic materials
Synthesis and processing
Magnetic properties and materials
Issue Date2016
PublisherNature Publishing Group
CitationNature Communications 7:12772 (2016)
AbstractThere 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 BiFeO -BiCoO 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 BiFeO -BiMnO -PbTiO ternary system, chemically designed to present such multiferroic phase boundary with enhanced ferroelectricity and canted ferromagnetism, which shows distinctive room-temperature magnetoelectric responses.
Identifiersdoi: 10.1038/ncomms12772
issn: 2041-1723
e-issn: 2041-1723
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