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Giant magnetoimpedance in CoP electrodeposited microtubes

Published online by Cambridge University Press:  31 January 2011

J. P. Sinnecker ,
J. M. García ,
A. Asenjo ,
M. Vázquez  and
A. García-Arribas
J. P. Sinnecker
Affiliation:
Instituto de Fí’sica, Universidade Federal do Rio de Janeiro, C.P. 68528, 21945–970, Rio de Janeiro, RJ, Brasil
J. M. García
Affiliation:
Instituto de Magnetismo Aplicado (UCM—RENFE), Instituto de Ciencia de Materiales de Madrid (CSIC), P.O. Box 155, 28230 Las Rozas, Madrid, Spain
A. Asenjo
Affiliation:
Instituto de Magnetismo Aplicado (UCM—RENFE), Instituto de Ciencia de Materiales de Madrid (CSIC), P.O. Box 155, 28230 Las Rozas, Madrid, Spain
M. Vázquez
Affiliation:
Instituto de Magnetismo Aplicado (UCM—RENFE), Instituto de Ciencia de Materiales de Madrid (CSIC), P.O. Box 155, 28230 Las Rozas, Madrid, Spain
A. García-Arribas
Affiliation:
Departamento de Fí’sicas, Universidad de Oviedo, Avenida de Calvo Sotelo s/n, 33007, Oviedo, Spain
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Abstract

Co90P10 amorphous microtubes with thickness ranging from 2 to 19 μm were electrodeposited onto Cu wire substrates. Samples exhibit radial magnetic anisotropy as deduced from hysteresis loops and magnetic force microscopy imaging. These microtubes show quite noticeable giant magnetoimpedance effect (GMI) with amplitude depending on layer thickness and frequency. The hysteresis in the GMI curves is small, which can be ascribed to the radial anisotropy. Such small hysteresis is of importance for technological applications.

Type
Articles
Information
Journal of Materials Research , Volume 15 , Issue 3 , March 2000 , pp. 751 - 755
Copyright
Copyright © Materials Research Society 2000

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References

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