期刊
CERAMICS INTERNATIONAL
卷 42, 期 10, 页码 11913-11917出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2016.04.114
关键词
BaFe12O19-Ni0.5Zn0.5Fe2O4 nano-composite; Exchange spring behavior; Magnetic properties; Henkel plots
资金
- National Natural Science Foundation of China [11474225, 11474224]
- Funding for Fostering Talents in Basic Science of the National Science Foundation of China [1210061]
Exchange-spring systems offer various technological applications. In this study, BaFe12O19-Ni0.5Zn0.5Fe2O4 nanocomposite magnets with single-step hysteresis loops were synthesized through a simple combustion method. Their composition, microstructure, and magnetic properties were also investigated. It was found that the magnetic properties and the mechanisms governing the magnetization of these nanocomposite magnets are strongly influenced by the calcination temperature as well as the molar ratios of the hard and soft phases. The exchange-coupling between the hard and soft magnetic phases was confirmed by the study of Henkel plots and the variation in the magnetic properties could also be explained by the dominant role of exchange and dipolar interactions in the nanocomposites. The study provides a simple but efficient route for the fabrication of exchange-coupled nano composite magnets based on ferrites having controllable magnetic properties. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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