| 金属微粒-电介质复合材料的高频电磁特性 |
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| 引用本文： | 杨河林,夏应清,温定娥,鲁述,刘武.金属微粒-电介质复合材料的高频电磁特性[J].华中师范大学学报(自然科学版),2006,40(2):177-180. |
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| 作者姓名： | 杨河林 夏应清 温定娥 鲁述 刘武 |
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| 作者单位： | 华中师范大学,物理学院,武汉,430079;武汉大学,电子信息学院,武汉,430072 |
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| 摘 要： | 利用高频电磁波作用下金属微粒的等效偶极子模型，考虑表面衰减而引入金属颗粒的归-化电磁参数，由等效介质理论（EMT）得到推广的Bruggeman公式计算了金属颗粒-电介质复合材料等效电磁参数随入射波频率的变化．对于无磁性金属微粒所形成的复合材料，较高的等效电容率的虚部反映了复合材料具有一定的磁损耗和较强的吸波特性，等效磁导率的实部小于1显示出抗磁性．
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| 关 键 词： | 金属颗粒-电介质复合材料 等效介质理论 等效电磁参数 |
| 文章编号： | 1000-1190（2006）02-0177-04 |
| 收稿时间： | 2005-06-05 |
| 修稿时间： | 2005-06-05 |
High frequency electromagnetic properties of metal particle-dielectric composites |
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| YANG He-lin,XIA Ying-qing,WEN Ding-e,LU Shu,LIU Wu.High frequency electromagnetic properties of metal particle-dielectric composites[J].Journal of Central China Normal University(Natural Sciences),2006,40(2):177-180. |
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| Authors: | YANG He-lin XIA Ying-qing WEN Ding-e LU Shu LIU Wu |
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| Institution: | 1. College of Physical Science and Technology, Central China Normal University, Wuhan 430079; 2. College of Electronics and Informatics, Wuhan University, Wuhan 430072 |
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| Abstract: | Based on the effective dipole model of conducting particles impinged by high frequency electromagnetic wave,the improved Bruggeman formulas included the renormalized permittivity and renormalized permeability that take into account effective of surface retardation are derived by effective media theory(EMT).Numerical results exhibit the properties of effective electromagnetic parameters of mental particle-dielectric composites with frequency.For nonmagnetic mental particle composites,the high imaginary parts of effective permittivity reveal the loss of magnetic and strong absorbing wave property,the real parts of effective permeability smaller than 1 reveal its diamagnetism. |
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| Keywords: | mental particle-dielectric composite effective media theory effective electromagnetic parameter |
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