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Preparation and Magnetic Properties of FeSi/SiO2 Nanocomposites with Core-Shell Structure

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Abstract:

FeSi/SiO2 Core-shell nanoparticles were synthesized by DC arc-discharge approach and annealing process. The products were characterized by SEM, TEM, EDX, XRD and VSM. As-prepared FeSi/SiO2 Core-shell nanoparticles have the diameter of 40-100 nm and the thickness of the SiO2 shell is about 20 nm. The growth mechanism based on the crystallographic and thermodynamic theory was explained. Magnetic characterization was carried out and the results showed that the FeSi/SiO2 Core-shell nanoparticles exhibited superparamagnetism characteristic at room temperature.

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Periodical:

Advanced Materials Research (Volumes 834-836)

Pages:

50-55

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.834-836.50

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Cite this paper

Online since:

October 2013

Authors:

Zhong Rong Geng*, Yu Li, Ren Jie Yan, Cheng Bing Wang, Xiao Ming Ling

Keywords:

Core-Shell, FeSi/SiO2, Magnetic, Nanoparticle

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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