A novel perovskite oxide chemically designed to show multiferroic phase boundary with room-temperature magnetoelectricity.
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-BiCoO3solid 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-PbTiO3ternary system, chemically designed to present such multiferroic phase boundary with enhanced ferroelectricity and canted ferromagnetism, which shows distinctive room-temperature magnetoelectric responses.
Instituto de Ciencia de Materiales de Madrid, CSIC. Cantoblanco, 28049 Madrid, Spain.
Carmen M
CM
Fernández-Posada
Instituto de Ciencia de Materiales de Madrid, CSIC. Cantoblanco, 28049 Madrid, Spain.
Alicia
A
Castro
Laboratoire Structures, Propriétés et Modélisation des Solides, Associé au CNRS (UMR8580), Ecole Centrale Paris, 92295 Chatenay-Malabry, France.|Laboratoire Léon Brillouin, UMR 12 CEA-CNRS, CEA/Saclay, 91991 Gif-Sur-Yvette Cedex, France.
Jean-Michel
JM
Kiat
Laboratoire Léon Brillouin, UMR 12 CEA-CNRS, CEA/Saclay, 91991 Gif-Sur-Yvette Cedex, France.
Florence
F
Porcher
Institut des Sciences Chimiques de Rennes, Associé au CNRS (UMR 6226), Université de Rennes 1, 35042 Rennes, France.
Octavio
O
Peña
Instituto de Ciencia de Materiales de Madrid, CSIC. Cantoblanco, 28049 Madrid, Spain.
Miguel
M
Algueró
Instituto de Ciencia de Materiales de Madrid, CSIC. Cantoblanco, 28049 Madrid, Spain.
Harvey
H
Amorín
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