Magnetostatic Wave Propagation in YIG Double Films,

Abstract

Using the technique of surface permeabilities an expression is derived for the dispersion of a magnetostatic wave propagating in two close proximity magnetic films. Two modes of propagation are identified respectively as the symmetric and antisymmetric modes from the symmetry of the rf magnetic field. 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. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1983
Accession Number
ADP000938

Entities

People

  • Michael R. Daniel
  • P. R. Emtage

Tags

DTIC Thesaurus Topics

  • Coefficients
  • Couplings
  • Dispersions
  • Electromagnetic Wave Propagation
  • Films
  • Garnet
  • Magnetic Fields
  • Magnetic Films
  • Measurement
  • Microwaves
  • Permeability
  • Symmetry
  • Thickness
  • Transducers
  • Wave Phenomena
  • Wave Propagation
  • Yttrium Iron Garnet

Fields of Study

  • Physics

Readers

  • Microwave Engineering.
  • Thin Film Deposition Science.