Abstract:
It has been established that nonmonotonic magnetization relaxation in Pt/Co/Ir/Co/Pt synthetic ferrimagnets (SF) with perpendicular magnetic anisotropy is caused by the coincidence of two or three switching fields between stable states of the SF magnetization (double or triple point). The fields of switching between the stable states of SFs are determined by the ratio of the Zeeman energy, interlayer exchange energy, and the energies of magnetization reversal barriers of each layer, depending on the thickness of the layers and temperature. It has been shown that the selection of thickness and/or temperature enables reaching double and triple points at which the transition fields between the states coincide, which causes a nonmonotonic magnetic relaxation of SFs.
Keywords:
synthetic ferrimagnets, perpendicular magnetic anisotropy, magnetic relaxation, exchange interaction.
This work was supported by grant no. 3.1992.2017/4.6 as part of a competition of scientific projects carried out by the research teams of research centers and (or) scientific laboratories of higher education of educational organizations, and the Russian Foundation for Basic Research (A.I. Bezverkhnii), project no. 19-32-90128 (within the program Top 5-100).
Citation:
R. B. Morgunov, A. I. Bezverkhnii, O. S. Dmitriev, M. V. Bahmetev, “Conditions for the occurrence of spontaneous oscillating magnetic relaxation in synthetic Pt/Co/Ir/Co/Pt ferrimagnets”, Fizika Tverdogo Tela, 62:3 (2020), 407–412; Phys. Solid State, 62:3 (2020), 458–463
\Bibitem{MorBezDmi20}
\by R.~B.~Morgunov, A.~I.~Bezverkhnii, O.~S.~Dmitriev, M.~V.~Bahmetev
\paper Conditions for the occurrence of spontaneous oscillating magnetic relaxation in synthetic Pt/Co/Ir/Co/Pt ferrimagnets
\jour Fizika Tverdogo Tela
\yr 2020
\vol 62
\issue 3
\pages 407--412
\mathnet{http://mi.mathnet.ru/ftt8471}
\crossref{https://doi.org/10.21883/FTT.2020.03.49005.583}
\elib{https://elibrary.ru/item.asp?id=42776720}
\transl
\jour Phys. Solid State
\yr 2020
\vol 62
\issue 3
\pages 458--463
\crossref{https://doi.org/10.1134/S1063783420030142}
Linking options:
https://www.mathnet.ru/eng/ftt8471
https://www.mathnet.ru/eng/ftt/v62/i3/p407
This publication is cited in the following 1 articles:
R. B. Morgunov, A. I. Bezverkhnii, “Generation of nonequilibrium magnetic nuclei in a rapidly growing magnetic field in Pt/Co/Ir/Co/Pt synthetic ferrimagnets”, Phys. Solid State, 64:11 (2020), 2070–2076