材料科学
复合数
领域(数学分析)
光电子学
工程物理
复合材料
数学分析
数学
工程类
作者
Xiao-Wei Jin,Tong Li,Yuping Yao,Sheng Wang,Huigang Shi,Guozhi Chai,Daqiang Gao,Chenglong Jia,Li Xi,Desheng Xue
标识
DOI:10.1002/adfm.202418245
摘要
Abstract Soft magnetic materials are a core element of power electronics and electrical machines. However, none of the soft magnetic materials is able to exploit the full potential of wide bandgap semiconductors, which operate above MHz frequency for efficient energy conversion in power electronic systems. Here, a high‐performance Fe–Si soft magnetic composites with a 2D ordered domain structure are reported, enabling efficient energy conversion at MHz frequencies. By transforming spherical particles into flakes and arranging them in layers, 2D magnetic domains are created within the composite. This leads to a 90% increase in permeability and a tenfold decrease in loss at 3 MHz compared to composite made with spherical particles. The significantly increased cut‐off frequency indicates that the ordered flaky particles are suitable for MHz applications, unlike the disordered spherical particles. These findings provide an effective approach for fabricating high performance soft magnetic composites from traditional spherical particles and miniaturizing magnetic devices for efficient power electronics operation.
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