Experimental Study of Magnetism Dependence on the Grain Size in some Ferreous Magnetic Nanoparticles

Abstract:

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The influence of grain size on the magnetism in some ferreous magnetic nanoparticles was studied in experiment. It is found that the γ-Fe2O3 nanoparticles present the superparamagnetism. The coercivity and the remnant magnetization approach to zero. Moreover, the pure nanoparticles γ-Fe2O3 and Fe, under the normal temperature, the specific saturation magnetization decreases along with the grain size reduces. According to the basis magnetic domain structural theory, the grain size of the samples is all below the critical dimension ds.

Info:

Periodical:

Advanced Materials Research (Volumes 383-390)

Edited by:

Wu Fan

Pages:

3817-3822

DOI:

10.4028/www.scientific.net/AMR.383-390.3817

Citation:

Y. H. Zhu "Experimental Study of Magnetism Dependence on the Grain Size in some Ferreous Magnetic Nanoparticles", Advanced Materials Research, Vols. 383-390, pp. 3817-3822, 2012

Online since:

November 2011

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$35.00

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