Microstructure and Magnetic Properties of the Gadolinium Nanolayer in a Thermo-Sensitive Spin Valve
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Spin-valve nanostructures with an exchange-coupled Gd/CoFe pair (synthetic ferrimagnet) as the free layer were prepared by magnetron sputtering. It was shown that when a fixed magnetic field is applied and the temperature near the compensation temperature of the synthetic ferrimagnet is varied, the spin valve switches between magnetic states, which are characterized by maximum and minimum resistance. The dependence of the compensation temperature on the Gd layer thickness is studied, which is interpreted based on the results of investigations of the microstructure of the Gd layer, taking into account peculiarities of its magnetic structure.
Keywords:spin valve synthetic ferrimagnet microstructure magnetic anisotropy
This work was performed as part of a state assignment of FASO of the Russian Federation (topic SPIN, no. АААА-А18-118020290104-2) and was supported by the Integrated Program of Ural Branch, Russian Academy of Sciences (project no. 18-10-2-37), the Russian Foundation for Basic Research (project no. 16-02-00061), and the Ministry of Education and Science of the Russian Federation (contract no. 14.Z50.31.0025).
The studies were performed using equipment available at the Collective Usage Testing Center for Nanotechnologies and Advanced Materials at the Institute of Metal Physics, Ural Branch, Russian Academy of Sciences.
- 2.K. P. Belov, Rare-Earth Magnets and Their Application (Nauka, Moscow, 1980) [in Russian].Google Scholar
- 4.W. C. Koehler, “Magnetic Structures of Rare Earth Metals and Alloys,” in Magnetic Properties of Rare Earth Metals, Ed. by R. J. Elliot (Plenum, London, 1972). pp. 81–128.Google Scholar