Magnetoresistance in nanostructured Co-Ag prepared by mechanical alloying
Citation:J M D Coey, A J Fagan, R Skomski, J Gregg, K Ounodjela and S M Thompson 'Magnetoresistance in nanostructured Co-Ag prepared by mechanical alloying' in IEEE Transactions on Magnetics, 30, (2), 1993, pp 668-669
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Fine cobalt and silver powders have been ball-milled to yield a granular solid of composition Co30Ag70 in the form of coarse powder. The material is an intimate mixture of grains of fcc Co in a silver matrix. The cobalt is in the single-domain size range, and the samples exhibit coercivity (0.07 T at 296 K) and unusual thermomagnetic effects, including field-induced unidirectional anisotropy. There is a large, isotropic negative magnetoresistance, which exceeds 10% at 4.2 K.
Author: COEY, JOHN MICHAEL DAVID
Series/Report no:IEEE Transactions on Magnetics
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