Theoretical investigation on the possibility of preparing left-handed materials in metallic magnetic granular composites
Theoretical investigation on the possibility of preparing left-handed materials in metallic magnetic granular composites
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DOI：
10.1103/physrevb.65.144407
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发表时间：
2001-08
影响因子：
3.7
通讯作者：
S. Chui;Liangbin Hu
中科院分区：
文献类型：
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作者：
S. Chui;Liangbin Hu
我们研究了在金属磁性颗粒复合材料中制备左手材料的可能性。基于有效介质近似，我们证明了将金属磁性纳米颗粒掺入合适的绝缘基质中，控制金属磁性组分的磁化方向及其体积分数，就有可能制备出低涡流损耗的复合介质，该复合介质对电磁波在某些特定方向传播并在铁磁共振频率附近的频率区域极化的电磁波是左撇子。这种复合材料可能更容易在工业规模上生产。此外，它的物理性质可以很容易地通过局部旋转磁化来调整。
We investigate the possibility of preparing left-handed materials in metallic magnetic granular composites. Based on the effective medium approximation, we show that by incorporating metallic magnetic nanoparticles into an appropriate insulating matrix and controlling the directions of magnetization of metallic magnetic components and their volume fraction, it may be possible to prepare a composite medium of low eddy current loss that is left-handed for electromagnetic waves propagating in some special direction and polarization in a frequency region near the ferromagnetic resonance frequency. This composite may be easier to make on an industrial scale. In addition, its physical properties may be easily tuned by rotating the magnetization locally.