## Quantized spin wave modes in micron size magnetic discs

• We report on the observation of spin wave quantization in tangentially magnetized Ni80Fe20 discs by means of Brillouin light scattering spectroscopy. For a large wave vector interval several discrete, dispersionless modes with a frequency splitting up to 2.5 GHz were observed. The modes are identified as being magne-tostatic surface spin wave modes quantized by their lateral confinement in the disc. For the lowest modes dynamic magnetic dipolar coupling between the discs is found for a disc spacing of 0.1microm.

Author: J Jorzick, Serguei Demokritov, Burkard Hillebrands, C Chappert, D. Decanini, F. Rousseaux, E. Cambril urn:nbn:de:hbz:386-kluedo-9089 Preprint English 1999 1999 Technische Universität Kaiserslautern Fachbereich Physik 530 Physik

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