Coupled electronic and magnetic phase transition in the infinite-layer phase LaSrNiRuO4
Topochemical reduction of the ordered double perovskite LaSrNiRuO6 with CaH2 yields LaSrNiRuO4, an extended oxide phase containing infinite sheets of apex-linked, square-planar Ni1+O4 and Ru2+O4 units ordered in a checkerboard arrangement. At room temperature the localized Ni1+ (d9, S = 1/2) and Ru2...
| Main Authors: | , , , , |
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| Format: | Journal article |
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American Chemical Society
2016
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| _version_ | 1797078914942631936 |
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| author | Patino, M Zeng, D Bower, R McGrady, J Hayward, M |
| author_facet | Patino, M Zeng, D Bower, R McGrady, J Hayward, M |
| author_sort | Patino, M |
| collection | OXFORD |
| description | Topochemical reduction of the ordered double perovskite LaSrNiRuO6 with CaH2 yields LaSrNiRuO4, an extended oxide phase containing infinite sheets of apex-linked, square-planar Ni1+O4 and Ru2+O4 units ordered in a checkerboard arrangement. At room temperature the localized Ni1+ (d9, S = 1/2) and Ru2+ (d6, S = 1) centers behave paramagnetically. However, on cooling below 250 K the system undergoes a cooperative phase transition in which the nickel spins align ferromagnetically, while the ruthenium cations appear to undergo a change in spin configuration to a diamagnetic spin state. Features of the low-temperature crystal structure suggest a symmetry lowering Jahn–Teller distortion could be responsible for the observed diamagnetism of the ruthenium centers. |
| first_indexed | 2024-03-07T00:38:20Z |
| format | Journal article |
| id | oxford-uuid:822e4b3e-5865-4105-b594-529036a17647 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T00:38:20Z |
| publishDate | 2016 |
| publisher | American Chemical Society |
| record_format | dspace |
| spelling | oxford-uuid:822e4b3e-5865-4105-b594-529036a176472022-03-26T21:35:34ZCoupled electronic and magnetic phase transition in the infinite-layer phase LaSrNiRuO4Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:822e4b3e-5865-4105-b594-529036a17647Symplectic Elements at OxfordAmerican Chemical Society2016Patino, MZeng, DBower, RMcGrady, JHayward, MTopochemical reduction of the ordered double perovskite LaSrNiRuO6 with CaH2 yields LaSrNiRuO4, an extended oxide phase containing infinite sheets of apex-linked, square-planar Ni1+O4 and Ru2+O4 units ordered in a checkerboard arrangement. At room temperature the localized Ni1+ (d9, S = 1/2) and Ru2+ (d6, S = 1) centers behave paramagnetically. However, on cooling below 250 K the system undergoes a cooperative phase transition in which the nickel spins align ferromagnetically, while the ruthenium cations appear to undergo a change in spin configuration to a diamagnetic spin state. Features of the low-temperature crystal structure suggest a symmetry lowering Jahn–Teller distortion could be responsible for the observed diamagnetism of the ruthenium centers. |
| spellingShingle | Patino, M Zeng, D Bower, R McGrady, J Hayward, M Coupled electronic and magnetic phase transition in the infinite-layer phase LaSrNiRuO4 |
| title | Coupled electronic and magnetic phase transition in the infinite-layer phase LaSrNiRuO4 |
| title_full | Coupled electronic and magnetic phase transition in the infinite-layer phase LaSrNiRuO4 |
| title_fullStr | Coupled electronic and magnetic phase transition in the infinite-layer phase LaSrNiRuO4 |
| title_full_unstemmed | Coupled electronic and magnetic phase transition in the infinite-layer phase LaSrNiRuO4 |
| title_short | Coupled electronic and magnetic phase transition in the infinite-layer phase LaSrNiRuO4 |
| title_sort | coupled electronic and magnetic phase transition in the infinite layer phase lasrniruo4 |
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