Investigation of phonons and magnons in [Ni80Fe20/Au/Co/Au]10 multilayers

[Display omitted] •We study a phonons and magnons dispersion relations in multilayers structures [NiFe/Au/Co/Au]10.•The surface and volume spin waves and two acoustic waves are visible in BLS spectrum thanks of applied geometry.•The character of crossing in dispersion relations depends on the kinds...

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Bibliographic Details
Published inJournal of magnetism and magnetic materials Vol. 500; p. 166428
Main Authors Zdunek, M., Trzaskowska, A., Kłos, J.W., Babu, N.K.P., Mielcarek, S.
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 15.04.2020
Elsevier BV
Subjects
Acoustic propagation
Brillouin scattering spectroscopy
Cobalt
Finite element method
Gold
Investigations
Magnons
Multilayers
Silicon substrates
Spectrum analysis
Spin waves
Surface acoustic waves
Surface phonons
Wave propagation
Finite element method
Spin waves
Brillouin scattering spectroscopy
Surface phonons
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Summary:[Display omitted] •We study a phonons and magnons dispersion relations in multilayers structures [NiFe/Au/Co/Au]10.•The surface and volume spin waves and two acoustic waves are visible in BLS spectrum thanks of applied geometry.•The character of crossing in dispersion relations depends on the kinds of waves. The dispersion relations of surface acoustic waves and spin waves propagating in magnetic [Ni80Fe20/Au/Co/Au]10 multilayers deposited on a silicon substrate have been investigated by high-resolution Brillouin spectroscopy. We measured the spectra of spin waves for two canonical geometries where the spin waves propagate with the wave vector oriented parallel and perpendicular to the direction of static magnetization in-plane magnetized Py layer. We investigated experimentally the crossing of phononic and magnonic dispersion relations and discussed the mechanism of magnetoelastic interaction in this system.
ISSN:0304-8853
1873-4766
DOI:10.1016/j.jmmm.2020.166428