Magnetic interactions and magnetoimpedance effect in FINEMET/SiO2/FePt composite ribbons

Giant Magnetoimpedance (GMI) is attracting attention for its high sensitivity in the presence of an applied magnetic field. Although the GMI effect has been studied for many years, it is difficult to analyze the magnetic interactions between coating layer and ribbon by hysteresis loops for composite...

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Bibliographic Details
Published in:Journal of materials science. Materials in electronics 2024, Vol.35 (3), p.199, Article 199
Main Authors: Yang, Xiuwei, Wang, Dao, Chen, Tao, Li, Yizhang, Wang, Zhongmin, Yang, Zhen, Guo, Yongbin, Zhao, Zhenjie
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Charged particles
Chemistry and Materials Science
Ferrous alloys
Giant magnetoimpedance
Hysteresis loops
Intermetallic compounds
Iron compounds
Magnetic alloys
Magnetic fields
Magnetoimpedance
Materials Science
Morphology
Optical and Electronic Materials
Platinum compounds
Ribbons
Silicon dioxide
Thickness
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Summary:Giant Magnetoimpedance (GMI) is attracting attention for its high sensitivity in the presence of an applied magnetic field. Although the GMI effect has been studied for many years, it is difficult to analyze the magnetic interactions between coating layer and ribbon by hysteresis loops for composite ribbons with a large difference in thickness between the soft magnetic alloy and film. Therefore, the magnetic interactions of FINEMET ribbon coated with different thicknesses of SiO 2 and FePt films on the free side were thoroughly analyzed by GMI. The dipolar interactions decrease with the increase of thickness of SiO 2 layer. The GMI ratio of FINEMET/SiO 2/ FePt composite ribbons reaches 57% and characteristic frequency decreases to 800 kHz. These results could provide a way to analyze the magnetic interactions in composite ribbons.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-023-11920-7