Abstract
This paper presents the results of the investigation of the structure and magnetoresistive properties of [Co90Fe10/Cu]n superlattices deposited on (Ni80Fe20)60Cr40 and Ta/(Ni80Fe20)60Cr40 buffer layers by magnetron sputtering. Our study has found that a Ta sublayer added to the (Ni80Fe20)60Cr40 buffer layer increases the degree of perfection of the 〈111〉 texture. This leads to a substantial decrease in the magnetoresistance hysteresis. The optimization of the composition of multilayered structure allowed us to obtain the superlattice with the relative magnetoresistance magnitude, which at room temperature reaches 81% and, at liquid helium temperature, exceeds 160%. The studied superlattices exhibited high temperature stability.
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ACKNOWLEDGMENTS
This study was performed within the scope of state task of Federal Agency for Scientific Organizations (theme Spin, no. АААА-А18-118020290104-2) and was supported by the Russian Foundation for Basic Research (project no. 16-02-00061) and by the Ministry of Education and Science of the Russian Federation (contract no. 14.Z50.31.0025).
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Translated by N. Kolchugina
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Bannikova, N.S., Milyaev, M.A., Naumova, L.I. et al. Giant Magnetoresistance and Hysteresis Phenomena in CoFe/Cu Superlattices with Highly Perfect Crystallographic Texture. Phys. Metals Metallogr. 119, 1073–1078 (2018). https://doi.org/10.1134/S0031918X18110029
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DOI: https://doi.org/10.1134/S0031918X18110029