Microstructure and magnetoresistance of Co_(90)Fe_(10)/Cu and Co_(65)Fe_(26)Ni_9/Cu multilayers

摘要

Investigations of the microstructure, magnetic and magnetotransport properties of the optimized [Co_(90)Fe_(10)/Cu]n and [Co_(65)Fe_(26)Ni_9/Cu]_n multilayers with n = 32 prepared by magnetron sputtering are performed. These nanostructures exhibit the magnetoresistance values 83 % and 36 % at room temperature, respectively. The article presents the results of the influence of Co_(65)Fe_(26)Ni_9 alloy on the magnetoresistance values and crystal structure of multilayers. In the periodic part of the nanostructure [Co_(65)Fe_(26)Ni_9/Cu]_n based on CoFeNi ternary alloy, besides fcc the formation of a bcc phase in the continuous boundaries around crystallites is found.