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Microscopic theory of dipole-exchange spin waves in magnetic multilayers

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Abstract.

A microscopic model is employed to calculate the spectrum of dipole-exchange spin waves in multilayers in which thin ferromagnetic films are separated by non-magnetic spacers. Two configurations are considered: in one the films have magnetizations parallel to each other, in the other the magnetizations are antiparallel. The calculations extend a previous microscopic formalism that allows the calculation of the dipole-exchange spin wave spectrum in thin films. The results show the splitting of the frequency bands and the mode mixing caused by the dipolar interaction between the films as a function of spacer thickness.

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Authors and Affiliations

  1. Departamento de Física, Universidade Federal do Ceará, Campus do Pici, caixa postal 6030, 60455-760, Fortaleza, Ceará, Brazil

    J. Milton Pereira Jr. & R. N. Costa Filho

Authors
  1. J. Milton Pereira Jr.
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  2. R. N. Costa Filho
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Correspondence to J. Milton Pereira Jr..

Additional information

Received: 26 May 2004, Published online: 12 August 2004

PACS:

75.30.Ds Spin waves - 75.40.Gb Dynamic properties (dynamic susceptibility, spin waves, spin diffusion, dynamic scaling, etc.) - 75.70.-i Magnetic properties of thin films, surfaces, and interfaces

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Milton Pereira , J., Costa Filho, R.N. Microscopic theory of dipole-exchange spin waves in magnetic multilayers. Eur. Phys. J. B 40, 137–144 (2004). https://doi.org/10.1140/epjb/e2004-00252-4

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  • DOI: https://doi.org/10.1140/epjb/e2004-00252-4

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