Ranbin Wang , Zhanfan Jin , Wenhui Guo , You Wu , Jili Jia , Yang Shao , Na Chen , Kefu Yao
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引用次数: 0
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 Fe75B7C7P7Si3Mo0.5Cr0.5 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 (μe). Additionally, the reduced total core loss (Pcv) 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 μe of 31.0 up to 1 MHz, a DC-Bias performance of 75.2 % under a 100 Oe field, and a Pcv of 5819 kW/m3 (100 mT, 500 kHz). These results could expedite the development of new low-loss SMCs.
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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.
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