Abstract
The surface spin wave branches in ferromagnetic films are studied using
a microscopic theory which considers both magnetic dipole-dipole and
Heisenberg exchange interactions. The dipole terms are expressed in a
Hamiltonian formalism, and the dipole sums are calculated in a rapidly
convergent form. The Damon-Eshbach surface modes are analyzed for
different directions of the spin-wave propagation and also for different
ratios of the strength of the dipole interactions relative to the
exchange interactions. Numerical results are presented using parameters
for Fe and GdCl3. (C) 2001 Elsevier Science B.V. All rights reserved.
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