Coexistance of spiral and commensurate structures in a triangular antiferromagnet KFe(MoO4)2

Magnetization, specific heat, magnetic resonance and neutron diffraction measurements are used to study the magnetic structure of KFe(MoO4)2. This stacked triangular antiferromagnet (TN=2.5 K) demonstrates an unusual breaking of the spin system into two intercalated and almost independent 2D subsyst...

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Bibliographic Details
Published in:Journal of physics. Conference series 2010-01, Vol.200 (3), p.032068
Main Authors: Smirnov, A I, Svistov, L E, Prozorova, L A, Zheludev, A, Lumsden, M D, Ressouche, E, Petrenko, O A, Hagiwara, M, Kimura, S, Nishikawa, K, Kindo, K, Shapiro, A Ya, Demianets, L N
Format: Article
Language:English
Subjects:
Antiferromagnetism
Lattices
Magnetic resonance
Magnetic structure
Neutron diffraction
Neutrons
Physics
Spin structure
Subsystems
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Summary:Magnetization, specific heat, magnetic resonance and neutron diffraction measurements are used to study the magnetic structure of KFe(MoO4)2. This stacked triangular antiferromagnet (TN=2.5 K) demonstrates an unusual breaking of the spin system into two intercalated and almost independent 2D subsystems. One is a collinear antiferromagnet with a simple spin-flop behavior. The other is a spiral magnet. The spin structure may be explained assuming two types of inequivalent magnetic planes with distorted triangular lattices of Fe3+(S=5/2) ions.
ISSN:1742-6596
1742-6588
1742-6596
DOI:10.1088/1742-6596/200/3/032068