Influence of Coating Content on the Magnetic Properties of Iron-MnZn Ferrite Soft Magnetic Composites

Shen Wu; Ai Zhi Sun; Wen Huan Xu

doi:10.4028/www.scientific.net/AMR.652-654.567

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 652-654Influence of Coating Content on the Magnetic...

Influence of Coating Content on the Magnetic Properties of Iron-MnZn Ferrite Soft Magnetic Composites

Abstract:

In this paper, iron powder with high purity is covered by a Mn-Zn ferrite layer, and the effect of amount of ferrite on the microstructure and magnetic properties are investigated. The morphology of the samples was characterized by scanning electron microscopy coupled with energy dispersive X-ray spectroscopy. It was shown that the particle surface layer contains a thin insulating layer of Mn-Zn ferrite, with high particle surface coverage. The magnetic measurements on samples were carried out using a B-H curve analyzer and an AC performance tester at Bm=50mT. The results indicate that the Mn-Zn ferrite coated samples have excellent frequency characteristics compared with uncoated samples. Also, the composites with 4wt% ferrite show a good combination of magnetic permeability and magnetic loss in the range 0.8-150 kHz.

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Periodical:

Advanced Materials Research (Volumes 652-654)

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567-571

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.652-654.567

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Online since:

January 2013

Authors:

Shen Wu, Ai Zhi Sun, Wen Huan Xu

Keywords:

Magnetic Loss, MnZn Ferrite, Soft Magnetic Composites

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