Improvement of soft magnetic properties for Fe-based amorphous/nanocrystalline alloy by longitudinal magnetic field annealing

IF 3.2 3区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of Non-crystalline Solids Pub Date : 2025-01-06 DOI:10.1016/j.jnoncrysol.2024.123382

Mufeng Jiang , Jingjing Wang , Mingjuan Cai , Jun Li , Wanying Dong , Zhijun Guo , Baolong Shen

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引用次数: 0

Abstract

This study investigated the enhancement of soft magnetic properties in Fe_83.2-xCo_xSi_2.5B_9.5P₄Cu_0.8 (x = 0, 4, 8, 12 and 16 at %) amorphous/nanocrystalline alloys through longitudinal magnetic field annealing (FA). The FA-treated alloys demonstrate superior magnetic performance, achieving a superior saturation flux density (B_s) of 1.85 T, ultra-low coercivity (H_c) of 1.8 A/m, high effective permeability (μ_e) of 26,505 at 1 kHz, and low core loss (0.13 W/kg) at 1.0 T/50 Hz. Microstructural analysis reveals that the FA and Co substitution promotes nanocrystalline nucleation, forming high-density nanocrystals while suppressing grain growth through competitive dynamics and inhibiting element diffusion within the amorphous matrix. Domain observation further confirms that FA facilitates the transition from disordered, non-uniform magnetic to uniform, broad, plate-like domains. These findings elucidate the critical influence of longitudinal magnetic field annealing on microstructure evolution and magnetic domain alignment, which synergistically enhance soft magnetic properties.

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来源期刊

Journal of Non-crystalline Solids 工程技术-材料科学：硅酸盐

CiteScore

6.50

自引率

11.40%

发文量

576

审稿时长

35 days

期刊介绍： The Journal of Non-Crystalline Solids publishes review articles, research papers, and Letters to the Editor on amorphous and glassy materials, including inorganic, organic, polymeric, hybrid and metallic systems. Papers on partially glassy materials, such as glass-ceramics and glass-matrix composites, and papers involving the liquid state are also included in so far as the properties of the liquid are relevant for the formation of the solid. In all cases the papers must demonstrate both novelty and importance to the field, by way of significant advances in understanding or application of non-crystalline solids; in the case of Letters, a compelling case must also be made for expedited handling.