| 核壳型磁性颗粒微波磁导率模拟与实验研究 |
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| 引用本文： | 王忠友,江建军,张传坤,张韬奇. 核壳型磁性颗粒微波磁导率模拟与实验研究[J]. 电子元件与材料, 2008, 27(10) |
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| 作者姓名： | 王忠友 江建军 张传坤 张韬奇 |
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| 作者单位： | 华中科技大学,电子科学与技术系,湖北,武汉,430074;湖北省咸宁学院,信息工程学院,湖北,咸宁,437100;华中科技大学,电子科学与技术系,湖北,武汉,430074 |
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| 基金项目： | 国家自然科学基金，湖北省杰出人才基金 |
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| 摘 要： | 采用有效媒质理论模拟和实验验证的方法,研究了核壳型磁性颗粒的微波磁导率。结果表明:核壳结构有利于提高微波下颗粒的复磁导率,2GHz时,其实部比氧化后的颗粒提高6%~12%,虚部提高15%~30%。片状椭球形核壳结构优于球形核壳结构,2GHz时,20nm壳层厚的片状颗粒的复磁导率为4.85–1.71i,而同壳层厚的球状颗粒为4.55–1.31i。在核壳结构的颗粒中,壳层厚度薄有利于改善磁导率。
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| 关 键 词： | 电子技术 核壳模型 片状磁性颗粒 复磁导率 复介电常数 反射损耗 |
Simulation and experimental study of microwave permeability of magnetic particles with core-shell type |
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| WANG Zhong-you,JIANG Jian-jun,ZHANG Chuan-kun,ZHANG Tao-qi. Simulation and experimental study of microwave permeability of magnetic particles with core-shell type[J]. Electronic Components & Materials, 2008, 27(10) |
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| Authors: | WANG Zhong-you JIANG Jian-jun ZHANG Chuan-kun ZHANG Tao-qi |
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| Affiliation: | WANG Zhong-you1,2,JIANG Jian-jun1,ZHANG Chuan-kun1,ZHANG Tao-qi1 (1. Department of Electronic Science & Technology,Huazhong University of Science & Technology,Wuhan 430074,China,2. School of Information Engineering,Xianning University,Xianning 437100,Hubei Province,China) |
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| Abstract: | Microwave permeability of magnetic particles with core-shell type were investigated by methods of simulation of effective medium theory and experimental verification. Results show that microwave complex permeability is advanced via core-shell microstructure of particles, the real-part with core-shell is increased 6%~10% than oxidized particles in 2 GHz, and the imaginary-part is increased 15%~30% too; The flake-like particles with core-shell is superior to sphere ones, complex permeability of flake-like par... |
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| Keywords: | electron technology core-shell model flake-like magnetic particle complex permeability complex permittivity reflection loss |
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