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...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 magnetore-sistance) ratios of the multilayer films were measured at different temperatures. The results showed that FeNi3 precipitated at 360℃ and dissolved at 400℃. The films annealed at 360℃ for 1 h exhibited the highest GMR ratio 11% when saturation field was equal to 79.6 kA/m.展开更多
The composition, phase structure and microstructure of the discontinuous multilayer film[NiFeCo（10 nm）/Ag（10 nm）]×20 were investigated after Co ion implantation and annealing at 280, 320,360 and 400℃, respec...The composition, phase structure and microstructure of the discontinuous multilayer film[NiFeCo（10 nm）/Ag（10 nm）]×20 were investigated after Co ion implantation and annealing at 280, 320,360 and 400℃, respectively.GMR （giant magnetoresistance） ratio of the film with/without Co ion implantation was measured. The results showed that Co ion implantation decreased the granule size of the annealed multilayer film, and increased Hc value and GMR ratio of the multilayer film. After annealing at 360℃, the multilayer film [NiFeCo（10 nm）/Ag（10 nm）]×20 with/without Co ion implantation both exhibited the highest GMR ratio of 12.4%/11% under 79.6 kA/m of applied saturation magnetic field.展开更多
基金This work was supported by the National Natural Science Foundation of China under grant No.59771026.
文摘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 magnetore-sistance) ratios of the multilayer films were measured at different temperatures. The results showed that FeNi3 precipitated at 360℃ and dissolved at 400℃. The films annealed at 360℃ for 1 h exhibited the highest GMR ratio 11% when saturation field was equal to 79.6 kA/m.
基金support by the National Natural Science Foundation of China under grant No.59771026.
文摘The composition, phase structure and microstructure of the discontinuous multilayer film[NiFeCo（10 nm）/Ag（10 nm）]×20 were investigated after Co ion implantation and annealing at 280, 320,360 and 400℃, respectively.GMR （giant magnetoresistance） ratio of the film with/without Co ion implantation was measured. The results showed that Co ion implantation decreased the granule size of the annealed multilayer film, and increased Hc value and GMR ratio of the multilayer film. After annealing at 360℃, the multilayer film [NiFeCo（10 nm）/Ag（10 nm）]×20 with/without Co ion implantation both exhibited the highest GMR ratio of 12.4%/11% under 79.6 kA/m of applied saturation magnetic field.
