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R. Sato Turtelli, P. Kerschl, H. Fukunaga, Y. Kawazoe, A. Shintani, R. Grössinger:
"Effect of magnetostatic interaction on magnetic properties of mixed powders: computer simulation and experimental results";
Journal of Magnetism and Magnetic Materials, 272-276 (2004), e497 - e498.

Effect of magnetostatic interaction on magnetic properties of mixed powders: computer simulation and experimental results

R.S.R. Sato Turtelli a, P. Kerschl b, H. Fukunaga c, Y. Kawazoe c, A. Shintani d and R. Grössinger a

a Inst. für Festkörperphysik, Technische Universität Wien, Wiedner Hauptstrasse 8-10, Vienna A-1040, Austria
b Leibnitz Institute for Solid State and Materials Research Dresden, IFW, P.O. Box 270116, Dresden D-01171, Germany
c Department of Electrical Engineering and Electronics, Nagasaki University, Nagasaki 852-8521, Japan
d Research and Development Center, Kubota Co., 1-1 Hama 1-Chome, Amagasaki, Hyogo 661-8567, Japan

Available online 5 March 2004.


Abstract

Magnets were prepared by mixing powders of Ba-ferrite BaFe12O19 and soft magnetic amorphous (Fe0.97Cr0.03)76(Si0.5B0.5)22C2. The shape of the hysteresis loops of these magnets is typical of a single phase material. The saturation magnetisation increases and the remanence decreases proportionally to the mass quantity of the amorphous phase. Computer simulation on magnetostatic interaction among the powders was made using magnetic charge and the fast Fourier transformation. Excellent agreement between the measured and calculated loop shapes was found.

Author Keywords: Fine-particle system; Permanent magnet; Magnetisation curve; Hysteresis

75.50 Tt; 75.50.Ww; 75.60.Ej

http://dx.doi.org/10.1016/j.jmmm.2003.12.1422