Designing switchable polarization and magnetization at room temperature in an oxide.
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| Title: | Designing switchable polarization and magnetization at room temperature in an oxide. |
|---|---|
| Authors: | Mandal, P., Pitcher, M. J., Alaria, J., Niu, H., Borisov, P., Stamenov, P., Claridge, J. B., Rosseinsky, M. J. |
| Source: | Nature. 9/17/2015, Vol. 525 Issue 7569, p363-366. 4p. 2 Charts, 11 Graphs. |
| Subjects: | Effect of temperature on ferromagnetic materials, Polarization (Electricity) -- Temperature effects, Oxides, Magnetization, Ferroelectricity, Percolation, Charts, diagrams, etc. |
| Abstract: | Ferroelectric and ferromagnetic materials exhibit long-range order of atomic-scale electric or magnetic dipoles that can be switched by applying an appropriate electric or magnetic field, respectively. Both switching phenomena form the basis of non-volatile random access memory, but in the ferroelectric case, this involves destructive electrical reading and in the magnetic case, a high writing energy is required. In principle, low-power and high-density information storage that combines fast electrical writing and magnetic reading can be realized with magnetoelectric multiferroic materials. These materials not only simultaneously display ferroelectricity and ferromagnetism, but also enable magnetic moments to be induced by an external electric field, or electric polarization by a magnetic field. However, synthesizing bulk materials with both long-range orders at room temperature in a single crystalline structure is challenging because conventional ferroelectricity requires closed-shell d0 or s2 cations, whereas ferromagnetic order requires open-shell dn configurations with unpaired electrons. These opposing requirements pose considerable difficulties for atomic-scale design strategies such as magnetic ion substitution into ferroelectrics. One material that exhibits both ferroelectric and magnetic order is BiFeO3, but its cycloidal magnetic structure precludes bulk magnetization and linear magnetoelectric coupling. A solid solution of a ferroelectric and a spin-glass perovskite combines switchable polarization with glassy magnetization, although it lacks long-range magnetic order. Crystal engineering of a layered perovskite has recently resulted in room-temperature polar ferromagnets, but the electrical polarization has not been switchable. Here we combine ferroelectricity and ferromagnetism at room temperature in a bulk perovskite oxide, by constructing a percolating network of magnetic ions with strong superexchange interactions within a structural scaffold exhibiting polar lattice symmetries at a morphotropic phase boundary (the compositional boundary between two polar phases with different polarization directions, exemplified by the PbZrO3-PbTiO3 system) that both enhances polarization switching and permits canting of the ordered magnetic moments. We expect this strategy to allow the generation of a range of tunable multiferroic materials. [ABSTRACT FROM AUTHOR] |
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| Database: | Psychology and Behavioral Sciences Collection |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: pbh DbLabel: Psychology and Behavioral Sciences Collection An: 109534111 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Designing switchable polarization and magnetization at room temperature in an oxide. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Mandal%2C+P%2E%22">Mandal, P.</searchLink><br /><searchLink fieldCode="AR" term="%22Pitcher%2C+M%2E+J%2E%22">Pitcher, M. J.</searchLink><br /><searchLink fieldCode="AR" term="%22Alaria%2C+J%2E%22">Alaria, J.</searchLink><br /><searchLink fieldCode="AR" term="%22Niu%2C+H%2E%22">Niu, H.</searchLink><br /><searchLink fieldCode="AR" term="%22Borisov%2C+P%2E%22">Borisov, P.</searchLink><br /><searchLink fieldCode="AR" term="%22Stamenov%2C+P%2E%22">Stamenov, P.</searchLink><br /><searchLink fieldCode="AR" term="%22Claridge%2C+J%2E+B%2E%22">Claridge, J. B.</searchLink><br /><searchLink fieldCode="AR" term="%22Rosseinsky%2C+M%2E+J%2E%22">Rosseinsky, M. J.</searchLink> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Nature%22">Nature</searchLink>. 9/17/2015, Vol. 525 Issue 7569, p363-366. 4p. 2 Charts, 11 Graphs. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Effect+of+temperature+on+ferromagnetic+materials%22">Effect of temperature on ferromagnetic materials</searchLink><br /><searchLink fieldCode="DE" term="%22Polarization+%28Electricity%29+--+Temperature+effects%22">Polarization (Electricity) -- Temperature effects</searchLink><br /><searchLink fieldCode="DE" term="%22Oxides%22">Oxides</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetization%22">Magnetization</searchLink><br /><searchLink fieldCode="DE" term="%22Ferroelectricity%22">Ferroelectricity</searchLink><br /><searchLink fieldCode="DE" term="%22Percolation%22">Percolation</searchLink><br /><searchLink fieldCode="DE" term="%22Charts%2C+diagrams%2C+etc%2E%22">Charts, diagrams, etc.</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Ferroelectric and ferromagnetic materials exhibit long-range order of atomic-scale electric or magnetic dipoles that can be switched by applying an appropriate electric or magnetic field, respectively. Both switching phenomena form the basis of non-volatile random access memory, but in the ferroelectric case, this involves destructive electrical reading and in the magnetic case, a high writing energy is required. In principle, low-power and high-density information storage that combines fast electrical writing and magnetic reading can be realized with magnetoelectric multiferroic materials. These materials not only simultaneously display ferroelectricity and ferromagnetism, but also enable magnetic moments to be induced by an external electric field, or electric polarization by a magnetic field. However, synthesizing bulk materials with both long-range orders at room temperature in a single crystalline structure is challenging because conventional ferroelectricity requires closed-shell d0 or s2 cations, whereas ferromagnetic order requires open-shell dn configurations with unpaired electrons. These opposing requirements pose considerable difficulties for atomic-scale design strategies such as magnetic ion substitution into ferroelectrics. One material that exhibits both ferroelectric and magnetic order is BiFeO3, but its cycloidal magnetic structure precludes bulk magnetization and linear magnetoelectric coupling. A solid solution of a ferroelectric and a spin-glass perovskite combines switchable polarization with glassy magnetization, although it lacks long-range magnetic order. Crystal engineering of a layered perovskite has recently resulted in room-temperature polar ferromagnets, but the electrical polarization has not been switchable. Here we combine ferroelectricity and ferromagnetism at room temperature in a bulk perovskite oxide, by constructing a percolating network of magnetic ions with strong superexchange interactions within a structural scaffold exhibiting polar lattice symmetries at a morphotropic phase boundary (the compositional boundary between two polar phases with different polarization directions, exemplified by the PbZrO3-PbTiO3 system) that both enhances polarization switching and permits canting of the ordered magnetic moments. We expect this strategy to allow the generation of a range of tunable multiferroic materials. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Nature is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1038/nature14881 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 4 StartPage: 363 Subjects: – SubjectFull: Effect of temperature on ferromagnetic materials Type: general – SubjectFull: Polarization (Electricity) -- Temperature effects Type: general – SubjectFull: Oxides Type: general – SubjectFull: Magnetization Type: general – SubjectFull: Ferroelectricity Type: general – SubjectFull: Percolation Type: general – SubjectFull: Charts, diagrams, etc. Type: general Titles: – TitleFull: Designing switchable polarization and magnetization at room temperature in an oxide. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Mandal, P. – PersonEntity: Name: NameFull: Pitcher, M. J. – PersonEntity: Name: NameFull: Alaria, J. – PersonEntity: Name: NameFull: Niu, H. – PersonEntity: Name: NameFull: Borisov, P. – PersonEntity: Name: NameFull: Stamenov, P. – PersonEntity: Name: NameFull: Claridge, J. B. – PersonEntity: Name: NameFull: Rosseinsky, M. J. IsPartOfRelationships: – BibEntity: Dates: – D: 17 M: 09 Text: 9/17/2015 Type: published Y: 2015 Identifiers: – Type: issn-print Value: 00280836 Numbering: – Type: volume Value: 525 – Type: issue Value: 7569 Titles: – TitleFull: Nature Type: main |
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