Structure and magnetism of the topotactically reduced oxychloride Sr4Mn3O(6.5)Cl2.
Reaction of the n = 3 Ruddlesden-Popper oxychloride Sr(4)Mn(3)O(7.5)Cl(2) with calcium hydride yields the topotactically reduced phase Sr(4)Mn(3)O(6.5)Cl(2). The deintercalation of oxide ions from the central MnO(1.5) layer of the starting phase is accompanied by a rearrangement of the anion lattice...
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| 格式: | Journal article |
| 语言: | English |
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2012
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| _version_ | 1826304040836792320 |
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| author | Romero, F Hayward, M |
| author_facet | Romero, F Hayward, M |
| author_sort | Romero, F |
| collection | OXFORD |
| description | Reaction of the n = 3 Ruddlesden-Popper oxychloride Sr(4)Mn(3)O(7.5)Cl(2) with calcium hydride yields the topotactically reduced phase Sr(4)Mn(3)O(6.5)Cl(2). The deintercalation of oxide ions from the central MnO(1.5) layer of the starting phase is accompanied by a rearrangement of the anion lattice, resulting in a layer of composition MnO(0.5) in the reduced material, consisting of chains of MnO(4) tetrahedra connected by edge and corner sharing. Magnetization and low-temperature neutron diffraction data are consistent with antiferromagnetic coupling of manganese spins, but no long-range magnetic order is observed down to 5 K, presumably due to the large interlayer separation in the reduced phase. The influence of anion substitution on the structural selectivity of low-temperature reduction reactions is discussed. |
| first_indexed | 2024-03-07T06:11:48Z |
| format | Journal article |
| id | oxford-uuid:efc3a7f7-dbdd-4d49-8b77-4cd99552d4f9 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T06:11:48Z |
| publishDate | 2012 |
| record_format | dspace |
| spelling | oxford-uuid:efc3a7f7-dbdd-4d49-8b77-4cd99552d4f92022-03-27T11:42:38ZStructure and magnetism of the topotactically reduced oxychloride Sr4Mn3O(6.5)Cl2.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:efc3a7f7-dbdd-4d49-8b77-4cd99552d4f9EnglishSymplectic Elements at Oxford2012Romero, FHayward, MReaction of the n = 3 Ruddlesden-Popper oxychloride Sr(4)Mn(3)O(7.5)Cl(2) with calcium hydride yields the topotactically reduced phase Sr(4)Mn(3)O(6.5)Cl(2). The deintercalation of oxide ions from the central MnO(1.5) layer of the starting phase is accompanied by a rearrangement of the anion lattice, resulting in a layer of composition MnO(0.5) in the reduced material, consisting of chains of MnO(4) tetrahedra connected by edge and corner sharing. Magnetization and low-temperature neutron diffraction data are consistent with antiferromagnetic coupling of manganese spins, but no long-range magnetic order is observed down to 5 K, presumably due to the large interlayer separation in the reduced phase. The influence of anion substitution on the structural selectivity of low-temperature reduction reactions is discussed. |
| spellingShingle | Romero, F Hayward, M Structure and magnetism of the topotactically reduced oxychloride Sr4Mn3O(6.5)Cl2. |
| title | Structure and magnetism of the topotactically reduced oxychloride Sr4Mn3O(6.5)Cl2. |
| title_full | Structure and magnetism of the topotactically reduced oxychloride Sr4Mn3O(6.5)Cl2. |
| title_fullStr | Structure and magnetism of the topotactically reduced oxychloride Sr4Mn3O(6.5)Cl2. |
| title_full_unstemmed | Structure and magnetism of the topotactically reduced oxychloride Sr4Mn3O(6.5)Cl2. |
| title_short | Structure and magnetism of the topotactically reduced oxychloride Sr4Mn3O(6.5)Cl2. |
| title_sort | structure and magnetism of the topotactically reduced oxychloride sr4mn3o 6 5 cl2 |
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