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Physics of Metals and Metallography
Published in: Physics of Metals and Metallography 10/2022

01-10-2022 | ELECTRICAL AND MAGNETIC PROPERTIES

The Magnetotransport Properties of Spin Valves Based on Exchange-Coupled Dy Helimagnetic and Co90Fe10 Ferromagnetic Nanolayers

Authors: L. I. Naumova, R. S. Zavornitsyn, M. A. Milyaev, M. V. Makarova, V. V. Proglyado, A. S. Rusalina, V. V. Ustinov

Published in: Physics of Metals and Metallography | Issue 10/2022

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Abstract

Spin valves with a CoFe/Dy/CoFe composition in the lower part of their structure have been manufactured by magnetron sputtering. The effect of prolonged storage and temperature on the structure and magnetotransport properties of spin valves has been studied. The change in the compensation temperature was used as an indicator of the intensity of diffusion processes in the exchange-coupled CoFe/Dy/CoFe structure. It has been revealed that diffusion induced changes in the magnetotransport properties become smaller with a decrease in the dysprosium layer thickness. It has been shown that the nanostructure still contains pure dysprosium, the atoms of which do not participate in the sperimagnetic ordering of the Dy–Co–Fe interface, even at a small nominal thickness (4 nm) of the dysprosium layer 3 months after sputtering.
next article The Dependence of the Magnetothermal Properties of ZnxMn1 – xFe2O4 Nanoparticles on the Magnetic Field Near Physiological Brezovich Limit

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Metadata
Title
The Magnetotransport Properties of Spin Valves Based on Exchange-Coupled Dy Helimagnetic and Co90Fe10 Ferromagnetic Nanolayers
Authors
L. I. Naumova
R. S. Zavornitsyn
M. A. Milyaev
M. V. Makarova
V. V. Proglyado
A. S. Rusalina
V. V. Ustinov
Publication date
01-10-2022
Publisher
Pleiades Publishing
Published in
Physics of Metals and Metallography / Issue 10/2022
Print ISSN: 0031-918X
Electronic ISSN: 1555-6190
DOI
https://doi.org/10.1134/S0031918X22600932

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