Structural and magnetic properties of Nd18Li8Co4--xFexO3-y and Nd18Li8Co4-xTixO39-y
Nd18Li8Co3FeO39-y, Nd 18Li8CoFe3O39-y and Nd 18Li8Co3TiO39-y have been synthesised and characterised by neutron powder diffraction, magnetometry and Mössbauer spectroscopy. Their cubic structure (Pm3n, a∼11.9 Å) is based on intersecting <1 1 1> chains comprised of alternating octahedra...
| Main Authors: | , , , , , |
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| Format: | Journal article |
| Language: | English |
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2011
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| _version_ | 1797053362169970688 |
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| author | Battle, P Dutton, SE Grandjean, F Long, G Thammajak, N Wisetsuwannaphum, S |
| author_facet | Battle, P Dutton, SE Grandjean, F Long, G Thammajak, N Wisetsuwannaphum, S |
| author_sort | Battle, P |
| collection | OXFORD |
| description | Nd18Li8Co3FeO39-y, Nd 18Li8CoFe3O39-y and Nd 18Li8Co3TiO39-y have been synthesised and characterised by neutron powder diffraction, magnetometry and Mössbauer spectroscopy. Their cubic structure (Pm3n, a∼11.9 Å) is based on intersecting <1 1 1> chains comprised of alternating octahedral and trigonal-prismatic coordination sites. These chains lie within hexagonal-prismatic cavities formed by a NdO framework. Each compound has an incomplete oxide sublattice (y∼1), with vacancies located around the octahedral sites that lie at the points of chain intersection. These sites are fully occupied by a disordered arrangement of transition-metal cations but only 75% of the remaining octahedral sites are occupied. The trigonal-prismatic sites are fully occupied by lithium except in the case of Nd18Li 8CoFe3O39-y where some iron is present. Antiferromagnetic interactions are present on the Nd sublattice in each composition, but a spin glass forms below 5 K when a high concentration of spins is also present on the octahedral sites. © 2011 Elsevier Inc. |
| first_indexed | 2024-03-06T18:42:46Z |
| format | Journal article |
| id | oxford-uuid:0d7611c9-c81c-462d-bca5-f98c72021e87 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T18:42:46Z |
| publishDate | 2011 |
| record_format | dspace |
| spelling | oxford-uuid:0d7611c9-c81c-462d-bca5-f98c72021e872022-03-26T09:40:39ZStructural and magnetic properties of Nd18Li8Co4--xFexO3-y and Nd18Li8Co4-xTixO39-yJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:0d7611c9-c81c-462d-bca5-f98c72021e87EnglishSymplectic Elements at Oxford2011Battle, PDutton, SEGrandjean, FLong, GThammajak, NWisetsuwannaphum, SNd18Li8Co3FeO39-y, Nd 18Li8CoFe3O39-y and Nd 18Li8Co3TiO39-y have been synthesised and characterised by neutron powder diffraction, magnetometry and Mössbauer spectroscopy. Their cubic structure (Pm3n, a∼11.9 Å) is based on intersecting <1 1 1> chains comprised of alternating octahedral and trigonal-prismatic coordination sites. These chains lie within hexagonal-prismatic cavities formed by a NdO framework. Each compound has an incomplete oxide sublattice (y∼1), with vacancies located around the octahedral sites that lie at the points of chain intersection. These sites are fully occupied by a disordered arrangement of transition-metal cations but only 75% of the remaining octahedral sites are occupied. The trigonal-prismatic sites are fully occupied by lithium except in the case of Nd18Li 8CoFe3O39-y where some iron is present. Antiferromagnetic interactions are present on the Nd sublattice in each composition, but a spin glass forms below 5 K when a high concentration of spins is also present on the octahedral sites. © 2011 Elsevier Inc. |
| spellingShingle | Battle, P Dutton, SE Grandjean, F Long, G Thammajak, N Wisetsuwannaphum, S Structural and magnetic properties of Nd18Li8Co4--xFexO3-y and Nd18Li8Co4-xTixO39-y |
| title | Structural and magnetic properties of Nd18Li8Co4--xFexO3-y and Nd18Li8Co4-xTixO39-y |
| title_full | Structural and magnetic properties of Nd18Li8Co4--xFexO3-y and Nd18Li8Co4-xTixO39-y |
| title_fullStr | Structural and magnetic properties of Nd18Li8Co4--xFexO3-y and Nd18Li8Co4-xTixO39-y |
| title_full_unstemmed | Structural and magnetic properties of Nd18Li8Co4--xFexO3-y and Nd18Li8Co4-xTixO39-y |
| title_short | Structural and magnetic properties of Nd18Li8Co4--xFexO3-y and Nd18Li8Co4-xTixO39-y |
| title_sort | structural and magnetic properties of nd18li8co4 xfexo3 y and nd18li8co4 xtixo39 y |
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