Magnetic Excitations in Random Anisotropic Magnets

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Turkish Journal of Physics
Volume:23 Issue:1
Magnetic Excitations in Random Anisotropic Magnets

Magnetic Excitations in Random Anisotropic Magnets

Authors : İbrahim AVGIN

Pages : 159-164

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Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :A study is made for the magnetic excitations and their Anderson localization properties for a Heisenberg ferromagnet with random anisotropic fields. The system is assumed to be in a strong applied field so that complete spin alignment is established. The magnetic excitations, i.e., the harmonic spin waves, are computed using coherent-field-anisotropy approximation insert ignore into journalissuearticles values(a version of coherent potential approximation of the electronic problem);. The spin wave shift and damping are calculated using the computed coherent field which is a complex function of energy approximating the random medium as a mean field level. The localizaton of the excitations are calculated by adopting the analogous results of the electronic problem. The model investigated here can be applicable to amorphous magnets in the low energy limit.
Keywords : Turk J Phys, 23, 1999, 159 164 Turk J Phys, vol 23, iss 1

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