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The giant magnetoresistance effect has been investigated for Ni14Fe13Co73/Cu multilayers prepared by the rf magnetron sputtering method, where the NiFeCo alloy has a saturation magnetostriction constant as small as 1×10-6. A magnetoresistance ratio of 22% is obtained at room temperature for a Cu thickness of 2.1 nm. About 80% of the magnetoresistance change occurs in the range of magnetic fields within 50 Oe.
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Jimbo et al. (1994) studied this question.
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