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Tunable Microwave Composites Containing Ferromagnetic Microwires

Published online by Cambridge University Press:  15 March 2011

Mihail Ipatov,
Larissa Panina,
Gloria R. Aranda,
Valentina Zhukova,
Arcady Zhukov and
Julian Gonzalez
Mihail Ipatov
Affiliation:
Dpto. Física de Materiales, Facultad de Química, Paseo Manuel de Lardizabal3, Universidad del País Vasco, 20018 San Sebastián, Spain
Larissa Panina
Affiliation:
School of Computing, Communications and Electronics, University of Plymouth, Drake Circus, Plymouth, Devon PL4 8AA, UK
Gloria R. Aranda
Affiliation:
Dpto. Física de Materiales, Facultad de Química, Paseo Manuel de Lardizabal3, Universidad del País Vasco, 20018 San Sebastián, Spain
Valentina Zhukova
Affiliation:
Dpto. Física de Materiales, Facultad de Química, Paseo Manuel de Lardizabal3, Universidad del País Vasco, 20018 San Sebastián, Spain
Arcady Zhukov
Affiliation:
Dpto. Física de Materiales, Facultad de Química, Paseo Manuel de Lardizabal3, Universidad del País Vasco, 20018 San Sebastián, Spain
Julian Gonzalez
Affiliation:
Dpto. Física de Materiales, Facultad de Química, Paseo Manuel de Lardizabal3, Universidad del País Vasco, 20018 San Sebastián, Spain
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Abstract

The effect of the external magnetic field on the dispersion of the effective permittivity in arrays of parallel CoFe-based amorphous wires is demonstrated by measuring S-parameters in free space in the frequency band of 0.9-17 GHz. The magnetic field is applied along the wires sensitively changing their magnetization and high frequency impedance. Based on the measurements of magneto-impedance in a single wire and transmission/reflection spectra of composites in free space, we show the correlation between magneto-impedance and the field dependence of the effective permittivity.

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Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1223 , 2009, 1223-EE03-04
Copyright
Copyright © Materials Research Society 2010

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References

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