Effect of Ge doping on the magnetic properties of Fe-6.5Si soft magnetic composites

Xubin Li; Jianjun Huang; Yaqiang Dong; Xincai Liu; Ronglin Zhao; Shouding Wu; Hang Wu; Wei Gao; Aina He; Jiawei Li

Journal of Materials Research and Technology (Jan 2023)

Effect of Ge doping on the magnetic properties of Fe-6.5Si soft magnetic composites

Xubin Li,
Jianjun Huang,
Yaqiang Dong,
Xincai Liu,
Ronglin Zhao,
Shouding Wu,
Hang Wu,
Wei Gao,
Aina He,
Jiawei Li

Affiliations

Xubin Li: Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, CAS Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang, 315201, China; Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
Jianjun Huang: Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, CAS Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang, 315201, China
Yaqiang Dong: Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, CAS Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang, 315201, China; University of Chinese Academy of Sciences, Beijing 100049, China; Corresponding author.
Xincai Liu: Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, CAS Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang, 315201, China; Corresponding author.
Ronglin Zhao: Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, CAS Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang, 315201, China
Shouding Wu: Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, CAS Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang, 315201, China
Hang Wu: Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, CAS Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang, 315201, China
Wei Gao: Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, CAS Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang, 315201, China
Aina He: Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, CAS Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang, 315201, China; University of Chinese Academy of Sciences, Beijing 100049, China
Jiawei Li: Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, CAS Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang, 315201, China; University of Chinese Academy of Sciences, Beijing 100049, China

Journal volume & issue: Vol. 22
pp. 3050 – 3057

Abstract

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In this work, the effect of Ge content on the soft magnetic properties and microstructure of FeSiGe soft magnetic powder cores (SMPCs) was systematically investigated. The results show that the addition of Ge is beneficial to increase the electrical resistivity of Fe93.5-xSi6.5Gex SMPCs, and the coercivity (Hc) shows a trend of decreasing and then increasing with the increase of Ge content. When the content of Ge is 2 wt%, the SMPCs exhibit the best magnetic properties with stable effective permeability of 78.4 up to 1 MHz, low core loss of 589.5 mW/cm3 at a maximum magnetic induction of 0.1 T and frequency of 50 kHz. By doping with Ge, the micro-vortex dots in the magnetic domain structure are reduced and the domain walls move more easily with the applied field, and the magnetic properties are improved.

Published in Journal of Materials Research and Technology

ISSN: 2238-7854 (Print); 2214-0697 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.journals.elsevier.com/journal-of-materials-research-and-technology/

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