Size-Dependence of Effective Anisotropy and Coercivity in Nanocomposite Permanent Magnetic Materials

Jia Jun Guo; Zhong Wei Wang; Jian Zhang; Hong Wei Li; Xu Zhao; Wei Chen

doi:10.4028/www.scientific.net/AMR.217-218.1689

Paper Titles

Strength Prediction and Test of FRP Composite Laminates with Central Hole
p.1669

Synthesis, Characterization and Oxidation Behavior of a Novel Curable Liquid Polysilane Precursors for C/C-SiC Composite
p.1673

Microstructure Characterization of Hot Extruded 7075 Al Bar with Different Passes and Temperatures
p.1679

Effects of Technological Parameters on the Tensile Properties of GF/PET Hybrid Thermoplastic Composite
p.1683

Size-Dependence of Effective Anisotropy and Coercivity in Nanocomposite Permanent Magnetic Materials
p.1689

Pulse-Laser-Crystallization of Amorphous Nd_3.7Pr_3.4Dy_0.9Fe₈₆B₅Nb₁
p.1693

Transmission Properties of the Symmetrical Structure of One-Dimensional Photonic Crystal Quantum Well
p.1696

Preparation and Characterization of Magnetic Toner Particles by Direct Polymerization Method
p.1702

Structure, Optical, Temperature Dependent Electrical Properties of P-Type Conduction in N–Al Codoped Zn_1-XMg_XO Films by Ultrasonic Spray Pyrolysis
p.1708

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 217-218Size-Dependence of Effective Anisotropy and...

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.

You might also be interested in these eBooks

High Performance Structures and Materials Engineering

View Preview

Info:

Periodical:

Advanced Materials Research (Volumes 217-218)

Pages:

1689-1692

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.217-218.1689

Citation:

Cite this paper

Online since:

March 2011

Authors:

Jia Jun Guo, Zhong Wei Wang, Jian Zhang, Hong Wei Li, Xu Zhao, Wei Chen

Keywords:

Coercivity, Effective Anisotropy, Nanocomposite Magnetic Material

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] R. Skomski, J. M. D. Coey: Phys. Rev. B, Vol. 48 (1993), P. 15812.

Google Scholar

[2] X.Y. Zhang, Y. Guan, L. Yang, J.W. Zhang: Appl. Phys. Lett, Vol. 79 (2001), P. 2426.

Google Scholar

[3] W.Y. Zhang, S.Y. Zhang, A.R. Yan, H.W. Zhang, B.G. Shen: J. Magn. Magn. Mater, Vol. 225 (2001), P. 389.

Google Scholar

[4] M. Liu, Y. Sun, G.B. Han, W. Yang, R.W. Gao: J. Alloys compd, Vol. 478 (2009), P. 303.

Google Scholar

[5] M. Liu, G.B. Han, W. Yang, R.W. Gao: J. Alloys compd, Vol. 486 (2009), P. 257.

Google Scholar

[6] J. Arcas, A. Hernando, J.M. Barandiaran, C. Orados, M. Vazquez, P. Mai, A. Neuwerler: Phys. Rev. B, Vol. 58 (1998), P. 5193.

Google Scholar

[7] Y. Sun, G.B. Han, B.P. Han, M. Liu, R.W. Gao: J. Appl. Phys, Vol. 101 (2007), P. 063908.

Google Scholar

[8] W.C. Feng, R. W. Gao, S.S. Yan, W. Li, M.G. Zhu: J. Appl. Phys, Vol. 98 (2005), P. 044305.

Google Scholar

[9] H. Kronmüller, R. Fischer, M. Seeger, A. Zern: J. phys. D, Vol. 29 (1996), P. 2274.

Google Scholar

[10] W. Chen, R. W. Gao, L. M. Liu, M. G. Zhu, G. B. Han, H. Q. Liu, W. Li: Mater. Sci. Eng. B, Vol. 110 (2004), P. 107.

Google Scholar