Propagation of Magnetostatic Spin Waves at Microwave Frequencies in a Normally-Magnetized Disk
- 1 November 1965
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 36 (11) , 3453-3459
- https://doi.org/10.1063/1.1703018
Abstract
The theoretical transit time is derived for propagation of spin waves across a normally‐magnetized disk. The exchange‐free case is described first. The group velocity is obtained for magnetostatic spin waves in an infinite slab. This is combined with the inhomogeneous internal field of a disk to compute the time delay of a wave packet in the disk. The time delay obtained from a computer calculation is compared with an approximate calculation. The dispersion relation is then modified to include exchange effects and the delay time is computed for this case. Experimental observations of microwave pulse‐echo behavior in disks of yttrium iron garnet are compared with these theoretical results.This publication has 6 references indexed in Scilit:
- Dispersion of spin waves and magnetoelastic waves in YIGProceedings of the IEEE, 1965
- Dispersion of Long-Wavelength Spin Waves from Pulse-Echo ExperimentsPhysical Review Letters, 1964
- Spin-Wave Propagation and the Magnetoelastic Interaction in Yttrium Iron GarnetJournal of Applied Physics, 1963
- Magnetostatic modes of a ferromagnet slabJournal of Physics and Chemistry of Solids, 1961
- Considerations on the Propagation and Generation of Magnetostatic Waves and Spin WavesPhysical Review B, 1960
- Magnetostatic Modes in Ferromagnetic ResonancePhysical Review B, 1957