Multilayer spin-valve CoFeP/Cu nanowires with giant magnetoresistance

Abstract

Multilayer CoFeP/Cu spin-valve nanowires with period of four {FMs/Cu/FMh/Cu}n and five {FMs/Cu/FMs/FMh/Cu}n layers were synthesized by the electrodeposition in the pores of polycarbonate membranes from single electrolyte where FMs are magnetically soft and FMh are magnetically hard layers. The results of magnetic measurements showed that the field dependence of the magnetoresistance of nanowires obtained in the work are typical for multilayer structures with a giant magnetoresistance, the maximum of which reaches ∼9%. Multilayered nanowires based on the giant magnetoresistive effect are interesting objects from fundamental point of view as model objects for explanation of the nature of magnetic ordering in strongly coupled bias magnetic multilayers. These materials are promising for practical applications as sensitive elements in magnetic field sensors, biomedical applications and functional spintronic materials.