Paper Title:
Size-Dependence of Effective Anisotropy and Coercivity in Nanocomposite Permanent Magnetic Materials
  Abstract

Take into account different degree of exchange-coupling interaction between soft and hard grains, the effective anisotropy and coercivity in nanocomposite permanent magnetic materials has been investigated by adopting a statistical average physical model. The calculated results show a strong dependence of effective anisotropy and coercivity on the grain size in these materials. Using this model, the serious deterioration of coercivity in experiments especially when the grain size is less then 15nm could be explained in terms of the dramatic drop of the effective anisotropy in nanocomposites.

  Info
Periodical
Advanced Materials Research (Volumes 217-218)
Edited by
Zhou Mark
Pages
1689-1692
DOI
10.4028/www.scientific.net/AMR.217-218.1689
Citation
J. J. Guo, Z. W. Wang, J. Zhang, H. W. Li, X. Zhao, W. Chen, "Size-Dependence of Effective Anisotropy and Coercivity in Nanocomposite Permanent Magnetic Materials", Advanced Materials Research, Vols. 217-218, pp. 1689-1692, 2011
Online since
March 2011
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