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  Spin excitations in the antiferromagnet NaNiO2

de Brion, S., Darie, C., Holzapfel, M., Talbayev, D., Mihaly, L., Simon, F., et al. (2007). Spin excitations in the antiferromagnet NaNiO2. Physical Review B, 75(9): 094402.

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 Creators:
de Brion, S.1, Author           
Darie, C., Author
Holzapfel, M.1, Author           
Talbayev, D., Author
Mihaly, L., Author
Simon, F., Author
Janossy, A., Author
Chouteau, G.1, Author           
Affiliations:
1High Magnetic Field Laboratory, Former Departments, Max Planck Institute for Solid State Research, Max Planck Society, ou_3371774              

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 Abstract: In NaNiO2, Ni3+ ions form a quasi-two-dimensional triangular lattice of S=1/2 spins. The magnetic order observed below 20 K has been described as an A type antiferromagnet with ferromagnetic layers weakly coupled antiferromagnetically. We studied the magnetic excitations with the electron spin resonance for frequencies 1-20 cm(-1), in magnetic fields up to 14 T. The bulk of the results are interpreted in terms of a phenomenological model involving biaxial anisotropy for the spins: a strong easy-plane term, and a weaker anisotropy within the plane.

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Language(s): eng - English
 Dates: 2007
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 357073
ISI: 000245328500040
 Degree: -

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Title: Physical Review B
Source Genre: Journal
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Pages: - Volume / Issue: 75 (9) Sequence Number: 094402 Start / End Page: - Identifier: ISSN: 1098-0121