Ferroelectricity induced by acentric spin-density waves in YMn2O5.
The commensurate and incommensurate magnetic structures of the magnetoelectric system YMn2O5, as determined from neutron diffraction, were found to be spin-density waves lacking a global center of symmetry. We propose a model, based on a simple magnetoelastic coupling to the lattice, which enables u...
| Main Authors: | , , , , |
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| Format: | Journal article |
| Language: | English |
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2006
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| _version_ | 1797083872286998528 |
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| author | Chapon, L Radaelli, P Blake, G Park, S Cheong, S |
| author_facet | Chapon, L Radaelli, P Blake, G Park, S Cheong, S |
| author_sort | Chapon, L |
| collection | OXFORD |
| description | The commensurate and incommensurate magnetic structures of the magnetoelectric system YMn2O5, as determined from neutron diffraction, were found to be spin-density waves lacking a global center of symmetry. We propose a model, based on a simple magnetoelastic coupling to the lattice, which enables us to predict the polarization based entirely on the observed magnetic structure. Our data accurately reproduce the temperature dependence of the spontaneous polarization, particularly its sign reversal at the commensurate-incommensurate transition. |
| first_indexed | 2024-03-07T01:47:38Z |
| format | Journal article |
| id | oxford-uuid:98f7af20-a6aa-4838-93a1-f8fa717238ac |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T01:47:38Z |
| publishDate | 2006 |
| record_format | dspace |
| spelling | oxford-uuid:98f7af20-a6aa-4838-93a1-f8fa717238ac2022-03-27T00:10:52ZFerroelectricity induced by acentric spin-density waves in YMn2O5.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:98f7af20-a6aa-4838-93a1-f8fa717238acEnglishSymplectic Elements at Oxford2006Chapon, LRadaelli, PBlake, GPark, SCheong, SThe commensurate and incommensurate magnetic structures of the magnetoelectric system YMn2O5, as determined from neutron diffraction, were found to be spin-density waves lacking a global center of symmetry. We propose a model, based on a simple magnetoelastic coupling to the lattice, which enables us to predict the polarization based entirely on the observed magnetic structure. Our data accurately reproduce the temperature dependence of the spontaneous polarization, particularly its sign reversal at the commensurate-incommensurate transition. |
| spellingShingle | Chapon, L Radaelli, P Blake, G Park, S Cheong, S Ferroelectricity induced by acentric spin-density waves in YMn2O5. |
| title | Ferroelectricity induced by acentric spin-density waves in YMn2O5. |
| title_full | Ferroelectricity induced by acentric spin-density waves in YMn2O5. |
| title_fullStr | Ferroelectricity induced by acentric spin-density waves in YMn2O5. |
| title_full_unstemmed | Ferroelectricity induced by acentric spin-density waves in YMn2O5. |
| title_short | Ferroelectricity induced by acentric spin-density waves in YMn2O5. |
| title_sort | ferroelectricity induced by acentric spin density waves in ymn2o5 |
| work_keys_str_mv | AT chaponl ferroelectricityinducedbyacentricspindensitywavesinymn2o5 AT radaellip ferroelectricityinducedbyacentricspindensitywavesinymn2o5 AT blakeg ferroelectricityinducedbyacentricspindensitywavesinymn2o5 AT parks ferroelectricityinducedbyacentricspindensitywavesinymn2o5 AT cheongs ferroelectricityinducedbyacentricspindensitywavesinymn2o5 |