Magnetooptical properties of Co-SiO2 granular films

被引：0
|
作者：
V. G. Kravets
L. V. Poperenko
机构：
[1] National Academy of Sciences of Ukraine,Institute of Problems of Information Recording
[2] Taras Shevchenko Kiev National University,undefined
来源：
Optics and Spectroscopy | 2008年 / 104卷
关键词：
78.20.Ci; 78.20.Ls; 78.30.Am;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The structural, optical, and magnetooptical properties of Co-SiO2 granular films are studied. It is found that the magnetooptical response is considerably enhanced in samples with a metal component concentration close to the percolation threshold. The Co nanogranules formed in the SiO2 matrix exhibit ferromagnetic properties and are ordered into the fcc structure, which is confirmed by magnetooptical investigations. The magnetooptical properties of nanocomposites are simulated in the effective-medium approximation. It is shown that the singularities found in the magnetooptical spectra are related to the excitation of plasmon resonances in granular films.
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页码：610 / 614
页数：4
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