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Zhurnal Tekhnicheskoi Fiziki, 2023, Volume 93, Issue 11, Pages 1616–1621
DOI: https://doi.org/10.61011/JTF.2023.11.56493.171-23 (Mi jtf7128) 		 
Solid-State Electronics

Eddy-current tunnel magnetic contacts with a composite free layer

I. Yu. Pashen'kina, E. V. Skorokhodova, M. V. Sapozhnikovba, A. A. Fraermana, G. A. Kichinc, K. A. Zvezdindc

a Institute for Physics of Microstructures, Russian Academy of Sciences, Nizhny Novgorod, Russia
b National Research Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, Russia
c Russian Quantum Center, New Spintronic Technologies, Moscow, Russia
d Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow
Full-text PDF (330 kB)
DOI: https://doi.org/10.61011/JTF.2023.11.56493.171-23
Abstract: A new method was offered to design tunnel magnetoresistive CoFeB/MgO/CoFeB contacts with free layer vortex magnetization configuration. Contacts are made using electron-beam lithography methods and have lateral sizes of $\sim$700 nm. The achieved tunnel magnetoresistance effect was equal to 80–120% for various samples. Thanks to low coercitivity, the magnetoresistance curve has a linear section without magnetic hysteresis that corresponds to vortex offset from the central position. Such types of contacts show spin-transfer diode properties – they feature rectification of high-frequency signals on vortex magnetization configurations.
Keywords: magnetic tunnel contacts, spin-transfer diode effect, vortex spin-transfer nanooscillators.
Funding agency Grant number
Russian Science Foundation 21-12-00271
19-12-00432
Development of the vortex TMR contact production process and AC investigations were supported by the RSF grant (21-12-00271), VHF measurements were supported by the RSF grant (19-12-00432).
Received: 07.07.2023
Revised: 14.09.2023
Accepted: 25.09.2023
Bibliographic databases:
Document Type: Article
Language: Russian
Citation: I. Yu. Pashen'kin, E. V. Skorokhodov, M. V. Sapozhnikov, A. A. Fraerman, G. A. Kichin, K. A. Zvezdin, “Eddy-current tunnel magnetic contacts with a composite free layer”, Zhurnal Tekhnicheskoi Fiziki, 93:11 (2023), 1616–1621
Citation in format AMSBIB
\Bibitem{PasSkoSap23}
\by I.~Yu.~Pashen'kin, E.~V.~Skorokhodov, M.~V.~Sapozhnikov, A.~A.~Fraerman, G.~A.~Kichin, K.~A.~Zvezdin
\paper Eddy-current tunnel magnetic contacts with a composite free layer
\jour Zhurnal Tekhnicheskoi Fiziki
\yr 2023
\vol 93
\issue 11
\pages 1616--1621
\mathnet{http://mi.mathnet.ru/jtf7128}
\crossref{https://doi.org/10.61011/JTF.2023.11.56493.171-23}
\elib{https://elibrary.ru/item.asp?id=55175391}
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