期刊
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
卷 323, 期 16, 页码 2148-2153出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2011.03.021
关键词
First Order Reversal Curve (FORC); Magnetic Nanocomposite; Preisach Model
资金
- European Union
- Hellenic Ministry of Education, Life Long Learning and religious affairs
The features that commonly appear in the First Order Reversal Curves (FORC) of magnetic composites, consisting of a hard and a soft phase, are reproduced by a simple mean-field approach in the limit of weak coupling. In this case the features corresponding to each phase are distinct and the effect of the interactions appears as biasing field on the soft phase and a coercivity reduction of the hard one. Interactions produce additional twin (positive/negative) interference features in the region of the (H, H-R) FORC diagram where there is a strong dependence on H through the soft phase and on H-R through the hard phase. The slope and the intensity of these twin features depend on interaction strength. (C) 2011 Elsevier B.V. All rights reserved.
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