Successive phase transitions and phase diagrams for the quasi-two-dimensional easy-axis triangular antiferromagnet Rb4Mn(MoO4)3

Using magnetic, thermal and neutron measurements we show that Rb4Mn(MoO4)3 is a quasi-2D triangular Heisenberg antiferromagnet with easy-axis anisotropy and successive transitions bracketing an intermediate collinear phase. An accurate quantitative account of the phase diagram is achieved through Mo...

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Bibliographic Details
Published in:Europhysics letters 2011-04, Vol.94 (1), p.17001
Main Authors: Ishii, R, Tanaka, S, Onuma, K, Nambu, Y, Tokunaga, M, Sakakibara, T, Kawashima, N, Maeno, Y, Broholm, C, P. Gautreaux, D, Chan, J. Y, Nakatsuji, S
Format: Article
Language:English
Subjects:
75.10.Hk
75.40.Cx
75.50.Ee
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Summary:Using magnetic, thermal and neutron measurements we show that Rb4Mn(MoO4)3 is a quasi-2D triangular Heisenberg antiferromagnet with easy-axis anisotropy and successive transitions bracketing an intermediate collinear phase. An accurate quantitative account of the phase diagram is achieved through Monte Carlo simulation of a spin Hamiltonian with easy-axis anisotropy D=0.22J.
ISSN:0295-5075
1286-4854
DOI:10.1209/0295-5075/94/17001