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物質創成科学研究科 / Graduate School of Materials Science >
Please use this identifier to cite or link to this item:
http://hdl.handle.net/10061/6656
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| Title: | Negative permeability of magnetic nanocomposite films for designing left-handed metamaterials |
| Authors: | Mitsumata, Chiharu
Tomita, Satoshi |
| Issue Date: | 26-Nov-2007 |
| Publisher: | American Institute of Physics |
| Journal Title: | APPLIED PHYSICS LETTERS |
| Volume: | 91 |
| Issue: | 22 |
| Article Number: | 223104 |
| Abstract: | We have theoretically evaluated magnetic permeability of Ni nanocomposite films, in which the dipolar interactions between the Ni particles are considered explicitly. A numerical model of the nanocomposite is constructed according to our recent experimental results and a micromagnetic calculation is conducted. We show that the value of permeability strongly depends on the volume fraction and randomness of the particles. Particularly, as the randomness of the particles increases, the negative value of permeability drastically shrinks. However, the region of applied field, where the permeability is negative, becomes broader. This is advantageous for the broadband left-handed metamaterials in microwave regions. © 2007 American Institute of Physics. |
| URI: | http://hdl.handle.net/10061/6656 |
| ISSN: | 0003-6951 |
| Rights: | Copyright (C) 2007 American Institute of Physics. |
| Text Version: | publisher |
| Publisher DOI: | 10.1063/1.2816894 |
| Appears in Collections: | 物質創成科学研究科 / Graduate School of Materials Science
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