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Open Access Nano Express

Effect of multilayer structure on high-frequency properties of FeCo/(FeCo)0.63(SiO2)0.37 nanogranular films on flexible substrates

Li Zhang12*, Sen Qin12, Xing Wang2, Jianliang Xie12 and Longjiang Deng12

Author affiliations

1 Engineering Research Center of Electromagnetic Wave Absorbing Materials, Ministry of Education, Chengdu 610054, China

2 State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China

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Citation and License

Nanoscale Research Letters 2013, 8:212  doi:10.1186/1556-276X-8-212

Published: 4 May 2013

Abstract

The high-frequency properties of the FeCo-SiO2 monolayer nanogranular films and FeCo/(FeCo)0.63(SiO2)0.37 multilayer nanogranular films which were elaborated on flexible substrates by magnetron sputtering system were studied. Compared to the monolayer films with the same FeCo content, the multilayer structures comprised of FeCo/(FeCo)0.63(SiO2)0.37 exhibit more excellent properties that the real and imaginary parts of permeability, more than the double value of the monolayer, increase to 250 and 350, respectively. The variation was considered owing to the reduction of the anisotropy field.

Keywords:
Multilayer film; High-frequency property; Flexible substrate; Anisotropy field