Abstract:
The dynamics of the magnetization vector in the free layer of a layered spin-valve structure was simulated. As materials for the free and fixed layers, six magnetically soft ferromagnets with longitudinal anisotropy were considered. The types of magnetization dynamics that are of practical interest for MRAM and HMDD (switching of the magnetization vector), STNO (stable precession of the magnetization vector), and the base element PSL (switching of the magnetization vector with two probable outcomes) were highlighted. The ranges of currents and fields corresponding to these operating modes of the spin valve were calculated. The numerical calculations of the switching time showed that, among the considered materials for the MRAM cell, the most suitable is Co$_{80}$Gd$_{20}$ alloy, while for the HMDD read head, it is Fe$_{60}$Co$_{20}$B$_{20}$. As a result of the precession frequency calculations, it was concluded that the Fe$_{60}$Co$_{20}$B$_{20}$ alloy is optimal for the STNO ferromagnetic layers. For the implementation of PSL, the best switching characteristics were demonstrated by the Co$_{93}$Gd$_{7}$ alloy.
Keywords:
spin valve, magnetoresistive random-access memory, probabilistic spin logic, spin-transfer nano-oscillator, read head of the hard disk.
The work was performed as part of the state task “Research and development of high-performance computing systems and components for them”, code “Vega-St-2021”, internal number 0067-2019-0005, no. 2R AAAA-A19-119043090023-6.
Citation:
I. A. Iusipova, “Frequency and performance of the spin valve with planar anisotropy”, Fizika Tverdogo Tela, 62:9 (2020), 1361–1369; Phys. Solid State, 62:9 (2020), 1525–1533
\Bibitem{Ius20}
\by I.~A.~Iusipova
\paper Frequency and performance of the spin valve with planar anisotropy
\jour Fizika Tverdogo Tela
\yr 2020
\vol 62
\issue 9
\pages 1361--1369
\mathnet{http://mi.mathnet.ru/ftt8302}
\crossref{https://doi.org/10.21883/FTT.2020.09.49754.29H}
\elib{https://elibrary.ru/item.asp?id=44154214}
\transl
\jour Phys. Solid State
\yr 2020
\vol 62
\issue 9
\pages 1525--1533
\crossref{https://doi.org/10.1134/S1063783420090358}
Linking options:
https://www.mathnet.ru/eng/ftt8302
https://www.mathnet.ru/eng/ftt/v62/i9/p1361
This publication is cited in the following 4 articles:
V. A. Skidanov, Iu. A. Iusipova, “Dynamics of the magnetization vector of the spin-valve free layer with planar anisotropy under the action of magnetic fields of the arbitrary direction”, Izvestiya Rossiiskoi akademii nauk. Seriya fizicheskaya, 87:3 (2023), 359
Iu. A. Iusipova, V. A. Skidanov, “Dynamics of the Vector of Magnetization in a Free Layer of a Spin Valve with Planar Anisotropy under the Action of Arbitrarily Directed Magnetic Fields”, Bull. Russ. Acad. Sci. Phys., 87:3 (2023), 310
Iuliia Iusipova, “Precession Frequency and Switching Time of the Magnetization Vector in the Spin-Valve Active Layer With Perpendicular Anisotropy”, IEEE Magn. Lett., 13 (2022), 1
Iu. A. Iusipova, A. I. Popov, “Spin Valves in Microelectronics (A Review)”, Semiconductors, 55:13 (2021), 1008
Citation in format AMSBIB
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