High GMR Effect and Perfect Microstructure in CoFe/Cu Multilayers

CoFe-/Cu-based multilayers with two different types of a buffer layer, NiFeCr, and Ta/NiFeCr have been produced by magnetron sputtering. The crystal structure of the superlattice layers has been studied. A correlation between the features of the microstructure and the magnitude of the magnetoresistance has been found. Superlattices with giant magnetoresistive effect reaching up to 83% have been fabricated.