By employing a rapidly solidified method and atmospheric annealing at 450℃-1hr, which is economical process, the granular ribbons of Cu90Fe10 with thickness of 20㎛were manufactured successfully. The magnetic property and microstructure evolution w...
By employing a rapidly solidified method and atmospheric annealing at 450℃-1hr, which is economical process, the granular ribbons of Cu90Fe10 with thickness of 20㎛were manufactured successfully. The magnetic property and microstructure evolution with annealing have been investigated. Saturation magnetization increased as annealing time increased, but no magnetoresistance effect observed at the applied field of 5000 O e. The surface oxidation layer of the ribbons increased as annealing time increased. TEM revealed that 30 nm Fe-rich cluster were foamed with 30 nm-pitch, which lessens the spin exchange interaction. Our result implies that more Fe contents and preventing surface oxidation be required to realize the granular magnetoresistance effect in CuFe ribbons.