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Resistance and magnetoresistance of Gadolinium/Tungsten Multilayers

Published online by Cambridge University Press:  03 September 2012

A. Heys ,
P. E. Donovan ,
E. G. Astrakharchik  and
B. George
A. Heys
Affiliation:
Physics Department, Birkbeck College, Malet Street, London WC1E 7HX, UK
P. E. Donovan
Affiliation:
Physics Department, Birkbeck College, Malet Street, London WC1E 7HX, UK
E. G. Astrakharchik
Affiliation:
permanent address: Kapitza Institute for Physical Problems, Moscow, Russia
B. George
Affiliation:
Laboratoire de Physique du Solide, University of Nancy, Vandoeuvre-les-Nancy, France
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Abstract

The resistance and magnetoresistance of Gd/W Multilayers have been measured at temperatures between 300K and 4K and in fields of up to 7 Tesla. The temperature coefficent of resistance is strongly influenced by the thickness of the Gd layers, becoming negative at a Gd layer thickness of 0.8nm. The Magnetoresistance is dominated by the Gd below about 100K. Multilayers which show reduced saturation magnetisation at 4K also have an unusual form of magnetoresistance around 100K. We suggest that this may be due to antiferromagnetic alignment of the Gd and W Moments at low applied fields.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 313: Symposium Q1 – Magnetic Ultrathin Films, Multilayers and Surfaces/Magnetic Interfaces-Physics and Characterizations , 1993 , 743
Copyright
Copyright © Materials Research Society 1993

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References

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