Abstract
We studied the effect of the annealing on the structure, transport properties and the magnetoresistance of Cu95Co95 glass-coated microwires prepared by Taylor-Ulitovsky technique. We observed a significant enhancement of the magnetoresistance, MR, effect in the samples annealed at 400 °C. On the other hand low temperature annealing (150–200 °C) allowed stress relaxation and elimination of the texture observed in as-prepared samples, although only slightly affects the MR effect. Annealing considerably affects the temperature dependence of resistivity. We observed resistivity minimum in both as-prepared and annealed samples associated with the Kondo effect. This minimum persists even under magnetic field in as-prepared samples. In annealed sample minimum disappears under applied magnetic field. Observed enhancement of the MR effect therefore must be attributed to the structural changes of the studied samples.
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