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Journal of Siberian Federal University. Mathematics & Physics, 2012, Volume 5, Issue 3, Pages 370–381
(Mi jsfu252)
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Spin-wave resonance in $\mathrm{NiFe/Dy}_x\mathrm{Co}_{1-x}/\mathrm{NiFe}$ structures with positive exchange interaction value between the ferromagnetic layers
Rauf S. Iskhakovab, Sergey V. Stolyarba, Mihail V. Chizhikb, Lidiya A. Chekanovaab, Viktor Yu. Yakovchukba a L. V. Kirensky Institute of Physics, Siberian Branch of the Russian Academy of Sciences, Krasnoyars, Russia
b Siberian Federal University, Krasnoyarsk, Russia
Abstract:
Standing exchange spin-waves spectrum of $\mathrm{Ni_{80}Fe_{20}/Dy_{20}Co_{80}/Ni_{80}Fe}_{20}$ magnetic sandwiches was investigated by the spin-wave rasonance technique. The layer of the amorphouse ferrimagnetic alloy has precompensation composition, therethore its magnetic structure provided positive value of the exchange coupling between the ferromagnetic layers. It was shown that spin modes of SWR specrum whitch according to the Kittel's ratio $H_r(n)\sim n^2$ are the standing acoustic exchange spin oscillations. It was determined, that spin modes of optical satellites of the SWR acoustic peaks are characterized by another ratio $H_r(n)\sim n^{5/2}$.
Keywords:
threelayer magnetic films, exchange coupled structures, ferromagnetic and spin-wave resonance, acoustic oscillations, optic satellites.
Received: 01.12.2011 Received in revised form: 30.12.2011 Accepted: 10.02.2012
Citation:
Rauf S. Iskhakov, Sergey V. Stolyar, Mihail V. Chizhik, Lidiya A. Chekanova, Viktor Yu. Yakovchuk, “Spin-wave resonance in $\mathrm{NiFe/Dy}_x\mathrm{Co}_{1-x}/\mathrm{NiFe}$ structures with positive exchange interaction value between the ferromagnetic layers”, J. Sib. Fed. Univ. Math. Phys., 5:3 (2012), 370–381
Linking options:
https://www.mathnet.ru/eng/jsfu252 https://www.mathnet.ru/eng/jsfu/v5/i3/p370
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