Effects of magnetic volume fraction induced by compaction pressure on magnetic properties of FeBCPSiMoCr-based soft magnetic composites

IF 2.5 3区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Magnetism and Magnetic Materials Pub Date : 2025-01-26 DOI:10.1016/j.jmmm.2025.172832

Ranbin Wang , Zhanfan Jin , Wenhui Guo , You Wu , Jili Jia , Yang Shao , Na Chen , Kefu Yao

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Abstract

The development of Fe-based glassy powders and low-loss soft magnetic composites (SMCs) is a major challenge for advancing high-frequency and miniaturized electronic devices. In the present work, highly spherical glassy powders from a new Fe₇₅B₇C₇P₇Si₃Mo_0.5Cr_0.5 alloy with high glass-forming ability (GFA) have been successfully prepared by a gas–water combined atomization method. The effects of compaction pressure on the magnetic properties of the corresponding SMCs were elucidated. High compaction pressure could effectively increase the magnetic volume fraction of the SMCs, thereby enhancing the effective permeability (μ_e). Additionally, the reduced total core loss (P_cv) could be mainly attributed to the reduced hysteresis loss associated with the decreased coercivity. At the maximum compaction pressure of 2000 MPa, the SMC exhibits optimal comprehensive performance, with a stable μ_e of 31.0 up to 1 MHz, a DC-Bias performance of 75.2 % under a 100 Oe field, and a P_cv of 5819 kW/m³ (100 mT, 500 kHz). These results could expedite the development of new low-loss SMCs.

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来源期刊

Journal of Magnetism and Magnetic Materials 物理-材料科学：综合

CiteScore

5.30

自引率

11.10%

发文量

1149

审稿时长

59 days

期刊介绍： The Journal of Magnetism and Magnetic Materials provides an important forum for the disclosure and discussion of original contributions covering the whole spectrum of topics, from basic magnetism to the technology and applications of magnetic materials. The journal encourages greater interaction between the basic and applied sub-disciplines of magnetism with comprehensive review articles, in addition to full-length contributions. In addition, other categories of contributions are welcome, including Critical Focused issues, Current Perspectives and Outreach to the General Public. Main Categories: Full-length articles: Technically original research documents that report results of value to the communities that comprise the journal audience. The link between chemical, structural and microstructural properties on the one hand and magnetic properties on the other hand are encouraged. In addition to general topics covering all areas of magnetism and magnetic materials, the full-length articles also include three sub-sections, focusing on Nanomagnetism, Spintronics and Applications. The sub-section on Nanomagnetism contains articles on magnetic nanoparticles, nanowires, thin films, 2D materials and other nanoscale magnetic materials and their applications. The sub-section on Spintronics contains articles on magnetoresistance, magnetoimpedance, magneto-optical phenomena, Micro-Electro-Mechanical Systems (MEMS), and other topics related to spin current control and magneto-transport phenomena. The sub-section on Applications display papers that focus on applications of magnetic materials. The applications need to show a connection to magnetism. Review articles: Review articles organize, clarify, and summarize existing major works in the areas covered by the Journal and provide comprehensive citations to the full spectrum of relevant literature.