Abstract
A microscopic theory is presented for surface and bulk spin waves in
films of rare-earth magnetic materials. The spin-wave spectrum has been
calculated in the framework of the Heisenberg model including axial and
hexagonal anisotropy. The spin-wave dispersion relations are obtained
for several film thicknesses and different values of the ratio
J(2)/J(1). The dependence of the bulk band edges on the anisotropy and
exchange parameters are also discussed. Numerical results are applied to
Dysprosium below the temperature transition from the ferromagnetic phase
to spiral spin arrangement. (C) 2002 Elsevier Science B.V. All rights
reserved.
Users
Please
log in to take part in the discussion (add own reviews or comments).