Abstract
A microscopic theory is employed to investigate the spin-wave spectra in
pure and generalized Fibonacci anisotropic magnetic superlattices. We
consider that the magnetic material has a ferromagnetic order. The
calculations are carried out for the exchange regime within the
framework of the Heisenberg model for low temperatures (T << T-c) taking
into account the Holstein-Primakoff transformations. Numerical results
are presented to discuss the fractal aspect of the spin-wave spectra,
including the localization of the modes as well as their scaling
properties. (C) 1999 Elsevier Science B.V. All rights reserved.
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