Magnetostatic volume wave propagation in a ferrimagnetic double layer
作者:
Michael R. Daniel,
P. R. Emtage,
期刊:
Journal of Applied Physics
(AIP Available online 1982)
卷期:
Volume 53,
issue 5
页码: 3723-3729
ISSN:0021-8979
年代: 1982
DOI:10.1063/1.331109
出版商: AIP
数据来源: AIP
摘要:
Using the technique of ’’surface permeabilities,’’ an expression is derived for the dispersion of magnetostatic waves propagating in two close proximity ferrimagnetic films. Two modes of propagation for volume waves are identified respectively as the symmetric and antisymmetric modes from the symmetry of the rf magnetization. Useful group delay behavior is shown to result from films of equal thickness. Some measurements are reported using two yttrium iron garnet films sandwiching simple single finger transducers. Difficulties in exciting the symmetric forward volume mode are explained in terms of the coupling coefficients for these double film structures.
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