Transport properties and magnetic disorder/order transition in FexAg100-x films
- D. BISERO
- E. ANGELI
- L. PIZZO
- F. SPIZZO
- P. VAVASSORI
- RONCONI F.
DOIAbstract
We have studied the magnetic disorder/order transition in FexAg100-x films, with x varying from 10 to 30, focusing our attention on the interplay between transport and magnetic properties. The samples have been deposited by DC magnetron co-sputtering and analyzed by magneto-optic Kerr effect and magnetoresistance measurements, with external magnetic field applied both in and out of the film plane. Magnetization and magnetoresistive results indicate that for low Fe content (x<20) the system can be described as a granular isotropic superparamagnet. In the high concentration range (20<x≤30) the effect of local magnetic ordering emerges and the films can no longer be considered as granular. The presence of magnetic coherence on different length...
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