Thermal stability of sputtered Ni sub 81 Fe sub 19 /Ag multilayers

From the observation of magnetic and structural properites of Ag /Ni sub 81 Fe sub 19 multilayers, it is shown that two diffusion mechanisms are involved in the thermal evolution of such structures: the diffusion of Ag at interfaces and at grain boundaries. Upon annealing, they first lead to a decre...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 1996-06, Vol.165 (1-3), p.338-341
Main Authors: Bouat, S, Auffret, S, Rodmacq, B
Format: Article
Language:English
Online Access:Get full text
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Summary:From the observation of magnetic and structural properites of Ag /Ni sub 81 Fe sub 19 multilayers, it is shown that two diffusion mechanisms are involved in the thermal evolution of such structures: the diffusion of Ag at interfaces and at grain boundaries. Upon annealing, they first lead to a decrease in interface roughness and then cause the layers to become discontinuous. It is also observed that thermal treatments under an applied magnetic field have an influence on the magnetoresistive properties of the samples. This could be due to some modification of the domain structure, resulting in a different contribution of electron scattering by domains walls.
ISSN:0304-8853