Preparation and properties of high magnetic permeability [Fe20Ni80-Al2O3]n magnetic thin films

IF 2.5 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Applied Physics A Pub Date : 2025-03-11 DOI:10.1007/s00339-025-08416-y

Hantao Wang, Yan Zhang, Deyu Yang, Jiaxing Liu, Wen Huang, Bo Dai, Yong Ren, Xiaoyu Li, Min Chen

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引用次数: 0

Abstract

Employing magnetic multilayers enhances the film’s resistivity and minimizes eddy current loss. Additionally, the magnetic layers are prevented from interacting with each other by using an insulating phase as an interlayer, which could function as a magnetic core to boost the planar inductance. We focus on [Fe₂₀Ni₈₀-Al₂O₃]_n in multilayer films created on silicon wafers by magnetron sputtering, the effect of cycle number on multilayer magnetic and electrical properties was also investigated. It was revealed that with an increase in the number of cycles, the coercivity decreased from 34.7 Oe to 0.0014 Oe, and the saturation magnetization strength mildly increased from 0.975 T to 1.006 T. The results show that as the escalation in cycle counts increased, the permeability spectra of the magnetic multilayer film’s initial permeability µ₀ increased significantly from 20 to 670, and the resistivity increased significantly from 37.6 µΩ·cm to 121.3 µΩ·cm, leading to notable performance improvements.

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来源期刊

Applied Physics A 工程技术-材料科学：综合

CiteScore

4.80

自引率

7.40%

发文量

964

审稿时长

38 days

期刊介绍： Applied Physics A publishes experimental and theoretical investigations in applied physics as regular articles, rapid communications, and invited papers. The distinguished 30-member Board of Editors reflects the interdisciplinary approach of the journal and ensures the highest quality of peer review.