Journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume 321, Issue 19, Pages 3090-3092Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2009.05.009
Keywords
Spin-reorientation; Magnetic anisotropy
Funding
- National Key Basic Research of China [2007CB925001]
- National Nature Science Foundation of China [10774147]
- Director's Fund of Hefei Institutes of Physical Science, Chinese Academy of Sciences
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In this paper, the low-field magnetic behavior of polycrystalline FeCr2S4 was investigated by thermal circling the sample from 5 to 200 K at a constant magnetic field. We show that, upon cooling the sample at 50 Oe to a temperature below the Curie temperature then warming back, the magnetization displays irreversibility between cooling and warming sequence. The irreversible behavior was suppressed gradually with increasing magnetic field. By considering spin-reorientation due to the increase of magnetic anisotropy upon cooling, the irreversible behavior has been explained qualitatively. (C) 2009 Elsevier B. V. All rights reserved.
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