Magnetoresistance of CoFeNi/Cu Superlattices Differing in the Ferromagnetic Alloy Composition
- Авторлар: Milyaev M.1,2, Bannikova N.1, Naumova L.1,2, Proglyado V.1, Patrakov E.1, Kamenskii I.1, Ustinov V.1,2
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Мекемелер:
- Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences
- Ural Federal University Named after the First President of Russia B.N. Yeltsin, Institute of Natural Sciences and Mathematics
- Шығарылым: Том 120, № 9 (2019)
- Беттер: 831-837
- Бөлім: Electrical and Magnetic Properties
- URL: https://journals.rcsi.science/0031-918X/article/view/168677
- DOI: https://doi.org/10.1134/S0031918X19090084
- ID: 168677
Дәйексөз келтіру
Аннотация
Abstract—The structure and magnetoresistive properties of Ta(5 nm)/NiFeCr(5 nm)/[FM(tFM)/Cu(2.2 nm)]n/ Ta(5 nm) superlattices prepared by magnetron sputtering are studied in this work. The ferromagnetic layer thickness tFM is varied in a 1.1–1.5 nm range. The Co90Fe10, Co85Fe12Ni3, Co77Fe17Ni6, and Co70Fe20Ni10 alloys with an fcc structure and close saturation magnetization values are used as the ferromagnetic (FM) materials. It is shown that, as the Ni and Fe contents in the CoFeNi alloy increase, the magnetoresistance of superlattices containing eight bilayers remains high and equal to 24–28%; in this case, the twofold decrease in the hysteresis occurs. As the number of bilayers in the superlattices, which contain CoFeNi alloys differing in composition increases to 12, the close values of magnetoresistance 30–31% are obtained. The correlation between the saturation magnetization of the ferromagnetic material of superlattice layers and maximum value of magnetoresistance is discussed.
Авторлар туралы
M. Milyaev
Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences; Ural Federal University Named after the First President of Russia B.N. Yeltsin, Institute of Natural Sciences and Mathematics
Хат алмасуға жауапты Автор.
Email: milyaev@imp.uran.ru
Ресей, Ekaterinburg, 620990; Ekaterinburg, 620002
N. Bannikova
Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences
Email: milyaev@imp.uran.ru
Ресей, Ekaterinburg, 620990
L. Naumova
Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences; Ural Federal University Named after the First President of Russia B.N. Yeltsin, Institute of Natural Sciences and Mathematics
Email: milyaev@imp.uran.ru
Ресей, Ekaterinburg, 620990; Ekaterinburg, 620002
V. Proglyado
Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences
Email: milyaev@imp.uran.ru
Ресей, Ekaterinburg, 620990
E. Patrakov
Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences
Email: milyaev@imp.uran.ru
Ресей, Ekaterinburg, 620990
I. Kamenskii
Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences
Email: milyaev@imp.uran.ru
Ресей, Ekaterinburg, 620990
V. Ustinov
Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences; Ural Federal University Named after the First President of Russia B.N. Yeltsin, Institute of Natural Sciences and Mathematics
Email: milyaev@imp.uran.ru
Ресей, Ekaterinburg, 620990; Ekaterinburg, 620002