Composition-dependent transition from spin glass to ferrimagnet in CaLa2Ni2-xCuxWO9 (0 ≤ x ≤ 0.5)
Polycrystalline samples of the monoclinic perovskites CaLa2Ni2-xCuxWO9 (x = 0.25 and 0.5) have been prepared and characterised by neutron diffraction and magnetometry. The Ni2+, Cu2+ and W6+ cations are partially ordered over two crystallographically-distinct six-coordinate sites such that one is ∼6...
| Asıl Yazarlar: | , , , |
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| Materyal Türü: | Journal article |
| Dil: | English |
| Baskı/Yayın Bilgisi: |
Elsevier
2020
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| _version_ | 1826280814250295296 |
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| author | Chin, C-M Cassidy, SJ Hunter, EC Battle, P |
| author_facet | Chin, C-M Cassidy, SJ Hunter, EC Battle, P |
| author_sort | Chin, C-M |
| collection | OXFORD |
| description | Polycrystalline samples of the monoclinic perovskites CaLa2Ni2-xCuxWO9 (x = 0.25 and 0.5) have been prepared and characterised by neutron diffraction and magnetometry. The Ni2+, Cu2+ and W6+ cations are partially ordered over two crystallographically-distinct six-coordinate sites such that one is ∼63% occupied by W6+ and both are occupied by Ni2+ and Cu2+ in a ratio of (2-x):x. The composition x = 0.25 behaves as a spin glass below 35 K whereas x = 0.5 is ferrimagnetic below 120 K with an ordered moment of 0.774(5) μB per magnetic cation. The atomic moments order in a G-type pattern and the imbalance in the number of magnetic cations on the two sites results in a net magnetisation. |
| first_indexed | 2024-03-07T00:19:22Z |
| format | Journal article |
| id | oxford-uuid:7bfd9611-0589-4fea-857f-cbc11b0c8eb5 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T00:19:22Z |
| publishDate | 2020 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:7bfd9611-0589-4fea-857f-cbc11b0c8eb52022-03-26T20:54:16ZComposition-dependent transition from spin glass to ferrimagnet in CaLa2Ni2-xCuxWO9 (0 ≤ x ≤ 0.5)Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:7bfd9611-0589-4fea-857f-cbc11b0c8eb5EnglishSymplectic ElementsElsevier2020Chin, C-MCassidy, SJHunter, ECBattle, PPolycrystalline samples of the monoclinic perovskites CaLa2Ni2-xCuxWO9 (x = 0.25 and 0.5) have been prepared and characterised by neutron diffraction and magnetometry. The Ni2+, Cu2+ and W6+ cations are partially ordered over two crystallographically-distinct six-coordinate sites such that one is ∼63% occupied by W6+ and both are occupied by Ni2+ and Cu2+ in a ratio of (2-x):x. The composition x = 0.25 behaves as a spin glass below 35 K whereas x = 0.5 is ferrimagnetic below 120 K with an ordered moment of 0.774(5) μB per magnetic cation. The atomic moments order in a G-type pattern and the imbalance in the number of magnetic cations on the two sites results in a net magnetisation. |
| spellingShingle | Chin, C-M Cassidy, SJ Hunter, EC Battle, P Composition-dependent transition from spin glass to ferrimagnet in CaLa2Ni2-xCuxWO9 (0 ≤ x ≤ 0.5) |
| title | Composition-dependent transition from spin glass to ferrimagnet in CaLa2Ni2-xCuxWO9 (0 ≤ x ≤ 0.5) |
| title_full | Composition-dependent transition from spin glass to ferrimagnet in CaLa2Ni2-xCuxWO9 (0 ≤ x ≤ 0.5) |
| title_fullStr | Composition-dependent transition from spin glass to ferrimagnet in CaLa2Ni2-xCuxWO9 (0 ≤ x ≤ 0.5) |
| title_full_unstemmed | Composition-dependent transition from spin glass to ferrimagnet in CaLa2Ni2-xCuxWO9 (0 ≤ x ≤ 0.5) |
| title_short | Composition-dependent transition from spin glass to ferrimagnet in CaLa2Ni2-xCuxWO9 (0 ≤ x ≤ 0.5) |
| title_sort | composition dependent transition from spin glass to ferrimagnet in cala2ni2 xcuxwo9 0 ≤ x ≤ 0 5 |
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