The Effect of Annealing on the Transport Properties of the Metastable Cu85Co15 Alloy

The melt-spinning technique was used to prepare metastable Cu85Co15 ribbons. Stabilization of the structure was performed by furnace heating and direct current Joule heating of ribbons. The resulting transformations were monitored using DSC, X-ray diffraction, the direct current four-probe method for resistivity and magnetoresistance measurements. Reduction in electrical resistance was observed for thermal annealing of the as-quenched samples over 680 K. The increase in the magnetoresistance ratio for annealing currents I ≤ 3 A, indicates that structural and magnetic transformations occur in the ribbons.