Issue Information :
روزنامه با شماره پیاپی سال 2004
Pages :
6
From page :
291
To page :
296
Abstract :
We present magnetoresistance (MR) measurements performed on quench-condensed granular Ni thin films which are on the verge of electric continuity. In these systems, the electric conductivity is believed to be governed by the resistance between a very small number of grains. The films exhibit sharp resistance jumps as a function of magnetic field. We interpret these findings as being the result of magneto-mechanical distortions that occur in single grains which act as bottlenecks in the dilute percolation network. The observed features provide a unique measure of magnetostriction effects in nano-grain structures as well as being able to shed light on some of the properties of regular granular magnetic films.
Journal title :
Acta Tropica
Serial Year :
2004
Journal title :
Acta Tropica
Record number :
1748133
Link To Document :
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