Magnetic properties of spin waves in thin yttrium iron garnet films

A. Talalaevskij, M. Decker, J. Stigloher, A. Mitra, H. S. Körner, O. Cespedes, C. H. Back, B. J. Hickey

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32 Scopus citations

Abstract

We report spin wave propagation experiments in thin yttrium iron garnet (YIG) films. Using time-resolved scanning Kerr microscopy we extract the mode structure of the spin waves. For quasi-single-mode excitation, the spin wave decay can be fitted with a damped harmonic oscillator function providing us with information about the attenuation length. We measure values of about 2.7 and 3.6 μm for the spin wave decay length of 38- and 49-nm-thick YIG samples, respectively. Micromagnetic simulations are performed to compare experimental and simulated modes. The data are in very good agreement with these simulations.

Original languageEnglish
Article number064409
JournalPhysical Review B
Volume95
Issue number6
DOIs
StatePublished - 10 Feb 2017
Externally publishedYes

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