电子元件与材料2025，Vol.44Issue(1)：1-8,8.DOI:10.14106/j.cnki.1001-2028.2025.1488
基于第一性原理计算的磁性吸收剂电磁参数预测
Prediction of electromagnetic parameters for magnetic absorbers based on first-principles calculations
摘要
Abstract
The magnetic absorbers are essential components of the wave-absorbing materials.Due to their broad application prospects,they have attracted widespread attention,with their performance optimization and design remaining at the research forefront.In this study,the first-principles calculations with classical electromagnetic theory was combined to analyze the relationship between the atomic composition structures and microwave electromagnetic parameters of the magnetic absorbers from microscopic to macroscopic scales,and a multi-scale investigation of absorbers was achieved.Using the first-principles calculations,the static electromagnetic parameters of three typical spherical magnetic absorbers Fe15Si,FeCo,and Fe12Si2Al2 were calculated.By combining the Landau-Lifshitz-Gilbert(LLG)equation and Debye relation with effective medium theory,the electromagnetic parameters in the 0.5-18 GHz microwave frequency range were successfully predicted.By comparing with experimental results,the accuracy and reliability of the predictions were verified.This work provides a theoretical basis for the optimized design of the magnetic microwave-absorbing materials.关键词
磁性吸收剂/第一性原理计算/有效媒质理论/电磁参数Key words
magnetic absorbers/the first-principles calculations/effective medium theory/electromagnetic parameters分类
动力与电气工程引用本文复制引用
刘佳熙,白兴智,张楠,陆海鹏..基于第一性原理计算的磁性吸收剂电磁参数预测[J].电子元件与材料,2025,44(1):1-8,8.基金项目
国家自然科学基金(51972046) （51972046）
