Magnetic properties and magnetoimpedance in FINEMET/NdFeB composite ribbons

IF 5.3 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Research Bulletin Pub Date : 2025-04-23 DOI:10.1016/j.materresbull.2025.113507

Yongbin Guo , Dao Wang , Renpeng Xing , Zhaoxia Xu , Yizhang Li , Xiuwei Yang , Zhongmin Wang , Zhenjie Zhao

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Abstract

This study systematically investigates the giant magnetoimpedance effect (GMI), structure, surface topography and magnetic property of the samples as a function of film thickness. All composite ribbons exhibit soft magnetic characteristics with minimal variation in coercivity. Notably, the coercivity of the NdFeB film is significantly higher compared to that of the composite ribbons. The maximum GMI ratio observed for the composite ribbons reaches 90.4 %, with the peak potential field increasing to 6.0 Oe with the increase of film thickness to 100 nm. A detailed analysis of the peak potential field reveals a strong correlation between the film and ribbon properties. The magnetic interactions models have been developed to explain the variation of magnetoimpedance as a function of film thickness. This model not only enhances our understanding of the magnetic behavior within these composite materials but also provides a theoretical foundation for optimizing high-performance magnetic sensors.

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FINEMET/NdFeB复合带的磁性和磁阻抗

本研究系统地研究了薄膜厚度对样品巨磁阻抗效应（GMI）、结构、表面形貌和磁性能的影响。所有复合带都具有软磁特性，矫顽力变化极小。值得注意的是，与复合带相比，NdFeB薄膜的矫顽力明显提高。当膜厚度增加到100 nm时，复合带的最大GMI比达到90.4%，峰值势场增大到6.0 Oe。峰势场的详细分析揭示了薄膜和带性质之间的强相关性。建立了磁相互作用模型来解释磁阻抗随薄膜厚度的变化。该模型不仅增强了我们对这些复合材料磁性行为的理解，而且为优化高性能磁传感器提供了理论基础。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Materials Research Bulletin 工程技术-材料科学：综合

CiteScore

9.80

自引率

5.60%

发文量

372

审稿时长

42 days

期刊介绍： Materials Research Bulletin is an international journal reporting high-impact research on processing-structure-property relationships in functional materials and nanomaterials with interesting electronic, magnetic, optical, thermal, mechanical or catalytic properties. Papers purely on thermodynamics or theoretical calculations (e.g., density functional theory) do not fall within the scope of the journal unless they also demonstrate a clear link to physical properties. Topics covered include functional materials (e.g., dielectrics, pyroelectrics, piezoelectrics, ferroelectrics, relaxors, thermoelectrics, etc.); electrochemistry and solid-state ionics (e.g., photovoltaics, batteries, sensors, and fuel cells); nanomaterials, graphene, and nanocomposites; luminescence and photocatalysis; crystal-structure and defect-structure analysis; novel electronics; non-crystalline solids; flexible electronics; protein-material interactions; and polymeric ion-exchange membranes.