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Radial, Planar and Helical Anisotropies Induced in Cylindrical Amorphous CoP Multilayers

Published online by Cambridge University Press:  10 February 2011

C. Favieres ,
C. Caroca ,
E. López ,
M. C. Sánchez ,
P. Sánchez  and
V. Madurga
C. Favieres
Affiliation:
Department of Physics of Materials, Universidad Complutense de Madrid, E-28040 Madrid, Spain.
C. Caroca
Affiliation:
Department of Physics of Materials, Universidad Complutense de Madrid, E-28040 Madrid, Spain.
E. López
Affiliation:
Department of Physics of Materials, Universidad Complutense de Madrid, E-28040 Madrid, Spain.
M. C. Sánchez
Affiliation:
Department of Physics of Materials, Universidad Complutense de Madrid, E-28040 Madrid, Spain.
P. Sánchez
Affiliation:
Department of Physics, ETSIT. Universidad Politécnica de Madrid, E-28040 Madrid, Spain.
V. Madurga
Affiliation:
Department of Physics, Universidad Pública de Navarra, E-31006. Pamplona, Spain.
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Abstract

Electrolytic cylindrical amorphous CoP multilayers, grown on copper wires, with controlled continuos variation of the magnetic anisotropy, in both, direction and magnitude, have been produced. The inner zone of the samples has been grown to exhibit radial anisotropy and the overlayer has been obtained with planar longitudinal anisotropy. Our studies have revealed that the magnetization at the surface of the samples is strongly coupled with the bulk anisotropy for thickness of the overlayer of ≈ 1.5 μm. Furthermore, it has been found that an angular deformation applied to the samples, when the copper wire is subjected to a torsion, modifies the direction of the longitudinal anisotropy to the helical direction. Also, a large spontaneous Matteucci effect is induced by means of this angular deformation.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 459: Symposium Y – Materials for Smart Systems II , 1996 , 489
Copyright
Copyright © Materials Research Society 1997

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References

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