Effect of Annealing Temperature on GMR of NiFeCo(10 nm)/Ag(10 nm)×20 Multilayer Film

摘要

The composition, phase structure, and microstructure of the discontinuous multilayer films [NiFeCo(10 nm)/Ag(10 nm)]×20 annealed at temperature 280,320,360 and 400℃, respectively were investigated. GMR (giant magnetoresistance) ratios of the multilayer films were measured at different temperatures. The results showed that FeNia precipitated at 360℃ and dissolved at 400℃. The films annealed at 360℃ for I h exhibited the highest GMR ratio 11% when saturation field was equal to 79.6 kA/m.