Abstract
Electrical resistivity in an amorphous simple metal alloy host Mg70Zn30 containing up to 4 at.%Gd has been studied. the 'non Kondo' upturn in resistivity at low temperature is interpreted in terms of conduction electrons scattering from correlated pairs of spins. A universal behaviour of excess resistivity per at.%Gd versus reduced temperature T/ theta s (where theta s marks the onset of excess resistivity) is observed. Comparison is made with theoretical predictions. Magnetic susceptibility data are found to correlate well with resistivity measurements. No significant attenuation of magnetic interaction is observed.
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