Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 509, Issue 16, Pages 5079-5083Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2011.01.101
Keywords
FeNi3-SiO2; Nanostructured materials; Chemical synthesis; Magnetic measurements; Magnetic properties
Categories
Funding
- New Teacher's Supporting Foundation of Xi'an Jiaotong University [08141008]
- National Natural Science Foundation of China [30772220]
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Monodisperse core-shell structured FeNi3-SiO2 composite nanoparticles (NPs) were synthesized by a facile hydrazine reduction combined modified Stober method. SEM and TEM analysis shows that FeNi3 cores are composed of small primary nanocrystals and are coated by amorphous SiO2 layer. As-prepared FeNi3-SiO2 nanocomposites exhibit typical soft magnetic properties. The permeability spectra vary with the contents of SiO2. When the SiO2 content is 10 wt%, the real part mu ' of the permeability reaches about 10 and is almost independent of frequency in the frequency range up to 1 GHz. And the imaginary part mu '' remains very low. This paper presents a facile approach to fabrication of novel soft magnetic materials for high-frequency applications. (C) 2011 Elsevier B.V. All rights reserved.
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