Structural anomalies at the magnetic transition in centrosymmetric BiMnO$_3$
The structural properties of BiMn$O_3$ were determined from neutron powder diffraction data as a function of temperature and magnetic field. The structure at all temperatures was found to be centrosymmetric with space group $C2/c$, which is incompatible with ferroelectricity. At T$_C\simeq 100 K$, w...
| Autores principales: | , , , , , , |
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| Formato: | Journal article |
| Lenguaje: | English |
| Publicado: |
2007
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| _version_ | 1826277014648127488 |
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| author | Montanari, E Calestani, G Righi, L Gilioli, E Bolzoni, F Knight, K Radaelli, P |
| author_facet | Montanari, E Calestani, G Righi, L Gilioli, E Bolzoni, F Knight, K Radaelli, P |
| author_sort | Montanari, E |
| collection | OXFORD |
| description | The structural properties of BiMn$O_3$ were determined from neutron powder diffraction data as a function of temperature and magnetic field. The structure at all temperatures was found to be centrosymmetric with space group $C2/c$, which is incompatible with ferroelectricity. At T$_C\simeq 100 K$, we observed the onset of a large magnetoelastic strain, proportional to the square of the magnetization. We interpret this structural rearrangement, together with the previously observed magnetodielectric anomalies, as due to the need to optimize the partially frustrated magnetic interactions. |
| first_indexed | 2024-03-06T23:22:31Z |
| format | Journal article |
| id | oxford-uuid:6936c33d-b55c-40ab-9783-c3e71acb19e9 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T23:22:31Z |
| publishDate | 2007 |
| record_format | dspace |
| spelling | oxford-uuid:6936c33d-b55c-40ab-9783-c3e71acb19e92022-03-26T18:49:55ZStructural anomalies at the magnetic transition in centrosymmetric BiMnO$_3$Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:6936c33d-b55c-40ab-9783-c3e71acb19e9EnglishSymplectic Elements at Oxford2007Montanari, ECalestani, GRighi, LGilioli, EBolzoni, FKnight, KRadaelli, PThe structural properties of BiMn$O_3$ were determined from neutron powder diffraction data as a function of temperature and magnetic field. The structure at all temperatures was found to be centrosymmetric with space group $C2/c$, which is incompatible with ferroelectricity. At T$_C\simeq 100 K$, we observed the onset of a large magnetoelastic strain, proportional to the square of the magnetization. We interpret this structural rearrangement, together with the previously observed magnetodielectric anomalies, as due to the need to optimize the partially frustrated magnetic interactions. |
| spellingShingle | Montanari, E Calestani, G Righi, L Gilioli, E Bolzoni, F Knight, K Radaelli, P Structural anomalies at the magnetic transition in centrosymmetric BiMnO$_3$ |
| title | Structural anomalies at the magnetic transition in centrosymmetric
BiMnO$_3$ |
| title_full | Structural anomalies at the magnetic transition in centrosymmetric
BiMnO$_3$ |
| title_fullStr | Structural anomalies at the magnetic transition in centrosymmetric
BiMnO$_3$ |
| title_full_unstemmed | Structural anomalies at the magnetic transition in centrosymmetric
BiMnO$_3$ |
| title_short | Structural anomalies at the magnetic transition in centrosymmetric
BiMnO$_3$ |
| title_sort | structural anomalies at the magnetic transition in centrosymmetric bimno 3 |
| work_keys_str_mv | AT montanarie structuralanomaliesatthemagnetictransitionincentrosymmetricbimno3 AT calestanig structuralanomaliesatthemagnetictransitionincentrosymmetricbimno3 AT righil structuralanomaliesatthemagnetictransitionincentrosymmetricbimno3 AT giliolie structuralanomaliesatthemagnetictransitionincentrosymmetricbimno3 AT bolzonif structuralanomaliesatthemagnetictransitionincentrosymmetricbimno3 AT knightk structuralanomaliesatthemagnetictransitionincentrosymmetricbimno3 AT radaellip structuralanomaliesatthemagnetictransitionincentrosymmetricbimno3 |