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Charge disproportionation and collinear magnetic order in the frustrated triangular antiferromagnet AgNiO2

Abstract:

We report a high-resolution neutron diffraction study of the crystal and magnetic structure of the orbitally-degenerate frustrated metallic magnet AgNiO2. At high temperatures the structure is hexagonal with a single crystallographic Ni site, low-spin Ni3+ with spin-1/2 and two-fold orbital degeneracy, arranged in an antiferromagnetic triangular lattice with frustrated spin and orbital order. A structural transition occurs upon cooling below 365 K to a tripled hexagonal unit cell containing t...

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Publication status:
Published

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Publisher copy:
10.1103/PhysRevB.77.094439

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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Condensed Matter Physics
Role:
Author
Journal:
Phys. Rev. B More from this journal
Volume:
77
Issue:
9
Pages:
094439
Publication date:
2007-10-15
DOI:
EISSN:
1550-235X
ISSN:
1098-0121
Language:
English
Keywords:
Pubs id:
pubs:66306
UUID:
uuid:1e3d8a90-e6b1-413d-a449-596ff6f85168
Local pid:
pubs:66306
Source identifiers:
66306
Deposit date:
2012-12-19

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