Negative permeability of magnetic nanocomposite films for designing left-handed metamaterials

Chiharu Mitsumata, Satoshi Tomita

研究成果: Article査読

24 被引用数 (Scopus)

抄録

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.

本文言語English
論文番号223104
ジャーナルApplied Physics Letters
91
22
DOI
出版ステータスPublished - 2007 12 6
外部発表はい

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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