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- Title
Tunable effective permittivity of composites based on ferromagnetic microwires with high magneto-impedance effect.
- Authors
Ipatov, M.; Aranda, G.; Zhukova, V.; Panina, L.; González, J.; Zhukov, A.
- Abstract
The effect of the external magnetic field on the dispersion of the effective permittivity in a single array of parallel CoFe-based amorphous wires is demonstrated by measuring the transmission/reflection spectra in free space in the frequency band of 0.9-17 GHz. The magnetic field is applied along the wires, sensitively changing their magnetisation and high-frequency impedance. Based on the measurements of magneto-impedance in a single wire and S-parameters of composites in free space, we show the correlation between the magneto-impedance and the field dependence of the effective permittivity.
- Subjects
PERMITTIVITY; COMPOSITE materials; FERROMAGNETIC materials; NANOWIRES; ELECTRIC impedance; MAGNETIC fields; DISPERSION (Chemistry); REFLECTANCE spectroscopy; MAGNETIZATION; COBALT compounds
- Publication
Applied Physics A: Materials Science & Processing, 2011, Vol 103, Issue 3, p693
- ISSN
0947-8396
- Publication type
Article
- DOI
10.1007/s00339-010-6202-2