Anisotropy and the critical behaviour of the quasi-2D antiferromagnet, MnPS3

Neutron scattering has been used to measure the critical behaviour of the sublattice magnetization, M, and the gap in the spin wave energies at the Brillouin zone centre, E-0, for a single crystal of the quasi-2D antiferromagnet, MnPS3. The system was previously believed to be a good example of a Heisenberg-like antiferromagnet, however, the critical behaviour over most of the temperature range is more representative of an XY-like system. Just below the Neel temperature, there appears to be a cross-over to 3D critical behaviour. This signature is seen in the temperature dependences of both M and E-0. The nature of the anisotropy, which appears to be the final obstacle to a full understanding of the critical properties of MnPS3, is discussed. (c) 2006 Elsevier B.V. All rights reserved.


Published in:
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 310, 2, 1221-1223
Presented at:
17th International Conference on Magnetism (ICM 2006), Kyoto, JAPAN
Year:
2007
Publisher:
AMSTERDAM, ELSEVIER SCIENCE BV
ISSN:
0304-8853
Keywords:
Laboratories:




 Record created 2009-04-02, last modified 2018-03-17


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