Constructing layered composite magnets to achieve long-range magnetic coupling in nanocrystalline (SmZr)(FeCoTi)12/(SmPr)Co5 composites

IF 10 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Today Physics Pub Date : 2025-05-14 DOI:10.1016/j.mtphys.2025.101749

Lin Liu , Mengying Bian , Xingfeng Zhang , Yuqing Li , Xuerui Xu , Weiqiang Liu , Qiong Wu , Ming Yue

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引用次数: 0

Abstract

Good magnetic coupling is the key to preparing high-performance nanocomposite permanent magnetic materials, which is an effective way to break the trade-off between magnetization and coercivity. This paper proposes a method to achieve good magnetic coupling by designing perpendicular interfaces and using micromagnetic simulations, leveraging both long-range dipolar and short-range exchange interactions. Flake-like (SmZr)(FeCoTi)₁₂ and granular Sm_0.6Pr_0.4Co₅ nanocrystalline powders were selected, and a layered composite magnet with excellent comprehensive magnetic properties was prepared by combining hot pressing and hot deformation processes. The prepared composite magnet exhibits significant magnetic anisotropy and good magnetic coupling effect. Furthermore, the factors affecting magnetic properties were explored by combining microstructural characterization with macroscopic magnetization analysis. Our findings also provide a reliable reference for the development of nanocrystalline composite permanent magnetic materials.

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构建层状复合磁体，实现纳米晶（SmZr）（FeCoTi）12/(SmPr)Co5复合材料的远程磁耦合

良好的磁耦合是制备高性能纳米复合永磁材料的关键，是打破磁性与矫顽力平衡的有效途径。本文提出了一种通过设计垂直界面和利用微磁模拟来实现良好磁耦合的方法，利用远程偶极和短程交换相互作用。选择片状（SmZr）（FeCoTi）12和粒状Sm0.6Pr0.4Co5纳米晶粉末，采用热压和热变形相结合的方法制备了综合磁性能优异的层状复合磁体。所制备的复合磁体具有显著的磁各向异性和良好的磁耦合效果。通过微观结构表征和宏观磁化分析相结合，探讨了影响磁性能的因素。研究结果也为纳米晶复合永磁材料的开发提供了可靠的参考。

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 Today Physics Materials Science-General Materials Science

CiteScore

14.00

自引率

7.80%

发文量

284

审稿时长

15 days

期刊介绍： Materials Today Physics is a multi-disciplinary journal focused on the physics of materials, encompassing both the physical properties and materials synthesis. Operating at the interface of physics and materials science, this journal covers one of the largest and most dynamic fields within physical science. The forefront research in materials physics is driving advancements in new materials, uncovering new physics, and fostering novel applications at an unprecedented pace.