Measurements of long-wavelength spin waves for the magnetic field in the Damon-Eshbach, backward-volume and forward-volume geometries of an yttrium iron garnet film

Wonbae Bang, Jinho Lim, Jonathan Trossman, Dovran Amanov, Matthias B. Jungfleisch, Axel Hoffmann, John B. Ketterson

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Abstract

We report systematic measurements of the dispersion of long wavelength spin waves for a wide range of wave vectors for the magnetic field along the three principal directions defining the forward volume, backward volume and Damon-Eshbach modes of a 9.72 μm thick film of an yttrium iron garnet obtained using lithographically patterned, multi-element, spatially resonant, antennas. Overall good agreement is found between the experimental data for the backward volume and Damon-Eshbach modes and the magnetostatic theory of Damon and Eshbach. Also, good agreement is found between the experimental data for the forward volume mode and the theory of Damon and van de Vaart.

Original languageEnglish (US)
Article number123902
JournalJournal of Applied Physics
Volume123
Issue number12
DOIs
StatePublished - Mar 28 2018

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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