Second-order term effect on the dispersion characteristics of a magnetostatic delay line
- 15 April 1988
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 63 (8) , 3335-3337
- https://doi.org/10.1063/1.340800
Abstract
This work reanalyzes the methods of calculation of the dispersion characteristics of a dispersive magnetostatic wave delay line. It turns out that the analytical approach, commonly developed in a first-order approximation, leads to erroneous results when exploited to derive the variation of the group velocity as a function of the wave vector k (or of the frequency), particularly for k values lower than 100–200 cm−1. To get a more accurate response, higher-order terms have been introduced in the analysis of the dispersion relation. To describe their effect, the inferred analytical results are compared to the numerical ones and to the experimental responses of a magnetostatic wave delay line. Furthermore, the method has been exploited to evaluate the power threshold levels (Pthr) in the excitation of magnetostatic solitons. It gives the correct order of magnitude of values when compared to the experimental ones.This publication has 6 references indexed in Scilit:
- Magnetostatic soliton propagation at microwave frequency in magnetic garnet filmsPhysical Review Letters, 1987
- Slowly dispersive, short time delay line based on very thick liquid phase epitaxially grown yttrium iron garnetJournal of Applied Physics, 1984
- Magnetostatic Wave Dispersive Delay LineIEEE Transactions on Microwave Theory and Techniques, 1982
- Magnetostatic Propagation for Uniform Normally‐Magnetized Multilayer Planar StructuresAIP Conference Proceedings, 1976
- Magnetostatic Propagation in a Dielectric Layered StructureJournal of Applied Physics, 1972
- Magnetostatic modes of a ferromagnet slabJournal of Physics and Chemistry of Solids, 1961