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

Carmen M. Fernández-Posada, Alicia Castro, Jean-Michel Kiat, Florence Porcher, Octavio Peña, Miguel Algueró and Harvey Amorín ()
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Carmen M. Fernández-Posada: Instituto de Ciencia de Materiales de Madrid
Alicia Castro: Instituto de Ciencia de Materiales de Madrid
Jean-Michel Kiat: Laboratoire Structures, Propriétés et Modélisation des Solides, Associé au CNRS (UMR8580)
Florence Porcher: Laboratoire Léon Brillouin, UMR 12 CEA-CNRS
Octavio Peña: Institut des Sciences Chimiques de Rennes, Associé au CNRS (UMR 6226)
Miguel Algueró: Instituto de Ciencia de Materiales de Madrid
Harvey Amorín: Instituto de Ciencia de Materiales de Madrid

Nature Communications, 2016, vol. 7, issue 1, 1-9

Abstract: 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.

Date: 2016
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DOI: 10.1038/ncomms12772

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