Abstract
The Hall resistivity of FexSn100−x granular alloy films fabricated by ion-beam sputtering has been studied. A saturated Hall resistivity up to 8.68 μΩ cm, the highest value ever observed for ferromagnetic metal/nonmagnetic metal system, has been obtained for the sample with Fe concentration x=68 at. %. This value is almost 60 times higher than that of pure Fe and eight orders higher than that of pure Sn, respectively. The scale relation between ρxys and ρxx was also investigated. The effect of both the concentration and average grain size of the films on the Hall resistivity has been discussed. Magnetoresistance measurement indicated no giant magnetoresistance effect has been found in this system.
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