Magneto-orbital ordering in the divalent A-site quadruple perovskite manganites AMn7O12(A=Sr, Cd, and Pb)
<p>Through analysis of variable temperature neutron powder diffraction data, we present solutions for the magnetic structures of SrMn<sub>7</sub>O<sub>12</sub>, CdMn<sub>7</sub>O<sub>12</sub>, and PbMn<sub>7</sub>O<sub>12</s...
| Автори: | , , , , , , |
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| Формат: | Journal article |
| Опубліковано: |
American Physical Society
2017
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| _version_ | 1826294922125246464 |
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| author | Johnson, R Khalyavin, D Manuel, P Radaelli, P Glazkova, I Terada, N Belik, A |
| author_facet | Johnson, R Khalyavin, D Manuel, P Radaelli, P Glazkova, I Terada, N Belik, A |
| author_sort | Johnson, R |
| collection | OXFORD |
| description | <p>Through analysis of variable temperature neutron powder diffraction data, we present solutions for the magnetic structures of SrMn<sub>7</sub>O<sub>12</sub>, CdMn<sub>7</sub>O<sub>12</sub>, and PbMn<sub>7</sub>O<sub>12</sub> in all long-range ordered phases. The three compounds were found to have magnetic structures analogous to that reported for CaMn<sub>7</sub>O<sub>12</sub>. They all feature a higher temperature lock-in phase with <i>commensurate</i> magneto-orbital coupling, and a delocked, multi-<b>k</b> magnetic ground state where <i>incommensurate</i> magneto-orbital coupling gives rise to a constant-moment magnetic helix with modulated spin helicity. CdMn<sub>7</sub>O<sub>12</sub> represents a special case in which the orbital modulation is commensurate with the crystal lattice and involves stacking of fully and partially polarized orbital states. Our results provide a robust confirmation of the phenomenological model for magneto-orbital coupling previously presented for CaMn<sub>7</sub>O<sub>12</sub>. Furthermore, we show that the model is universal to the <i>A</i><sup<2+< sup=""> quadruple perovskite manganites synthesised to date, and that it is tunable by selection of the <i>A</i>-site ionic radius.</sup<2+<></p> |
| first_indexed | 2024-03-07T03:53:10Z |
| format | Journal article |
| id | oxford-uuid:c1f7c8c0-08d2-4928-89b9-81498abc830a |
| institution | University of Oxford |
| last_indexed | 2024-03-07T03:53:10Z |
| publishDate | 2017 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | oxford-uuid:c1f7c8c0-08d2-4928-89b9-81498abc830a2022-03-27T06:05:43ZMagneto-orbital ordering in the divalent A-site quadruple perovskite manganites AMn7O12(A=Sr, Cd, and Pb)Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:c1f7c8c0-08d2-4928-89b9-81498abc830aSymplectic Elements at OxfordAmerican Physical Society2017Johnson, RKhalyavin, DManuel, PRadaelli, PGlazkova, ITerada, NBelik, A <p>Through analysis of variable temperature neutron powder diffraction data, we present solutions for the magnetic structures of SrMn<sub>7</sub>O<sub>12</sub>, CdMn<sub>7</sub>O<sub>12</sub>, and PbMn<sub>7</sub>O<sub>12</sub> in all long-range ordered phases. The three compounds were found to have magnetic structures analogous to that reported for CaMn<sub>7</sub>O<sub>12</sub>. They all feature a higher temperature lock-in phase with <i>commensurate</i> magneto-orbital coupling, and a delocked, multi-<b>k</b> magnetic ground state where <i>incommensurate</i> magneto-orbital coupling gives rise to a constant-moment magnetic helix with modulated spin helicity. CdMn<sub>7</sub>O<sub>12</sub> represents a special case in which the orbital modulation is commensurate with the crystal lattice and involves stacking of fully and partially polarized orbital states. Our results provide a robust confirmation of the phenomenological model for magneto-orbital coupling previously presented for CaMn<sub>7</sub>O<sub>12</sub>. Furthermore, we show that the model is universal to the <i>A</i><sup<2+< sup=""> quadruple perovskite manganites synthesised to date, and that it is tunable by selection of the <i>A</i>-site ionic radius.</sup<2+<></p> |
| spellingShingle | Johnson, R Khalyavin, D Manuel, P Radaelli, P Glazkova, I Terada, N Belik, A Magneto-orbital ordering in the divalent A-site quadruple perovskite manganites AMn7O12(A=Sr, Cd, and Pb) |
| title | Magneto-orbital ordering in the divalent A-site quadruple perovskite manganites AMn7O12(A=Sr, Cd, and Pb) |
| title_full | Magneto-orbital ordering in the divalent A-site quadruple perovskite manganites AMn7O12(A=Sr, Cd, and Pb) |
| title_fullStr | Magneto-orbital ordering in the divalent A-site quadruple perovskite manganites AMn7O12(A=Sr, Cd, and Pb) |
| title_full_unstemmed | Magneto-orbital ordering in the divalent A-site quadruple perovskite manganites AMn7O12(A=Sr, Cd, and Pb) |
| title_short | Magneto-orbital ordering in the divalent A-site quadruple perovskite manganites AMn7O12(A=Sr, Cd, and Pb) |
| title_sort | magneto orbital ordering in the divalent a site quadruple perovskite manganites amn7o12 a sr cd and pb |
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