Abstract
We have studied the Hall effect in amorphous paramagnetic Zr xCo 100−x alloys, with 48 ⩽ x ⩽ 80, between 1.5 and 300 K. In these alloys R H shows a very small temperature dependence but a large variation with concentration, being negative in the high cobalt region and positive on the zirconium-rich side. This behaviour, which has also been found in other zirconium-based glasses, cannot be explained classically. By comparison with the ZrFe system we propose that a significant contribution to R H via the side-jump mechanism, as proposed by Berger, has to be considered when trying to explain the behaviour of R H in these ZrCo metallic glasses.
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