Magnetic resonance frequencies in multilayers with biquadratic exchange and non-collinear magnetic ordering

Magnetic resonance frequencies in a magnetic trilayer or superlattice are theoretically studied. Biquadratic exchange between layers is assumed to be sufficiently strong for non-collinear (canted) magnetic ordering to exist in the multilayer. The optic mode frequency turns out to vanish at the bound...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 1997, Vol.165 (1), p.468-470
Main Authors: Bebenin, N.G., Kobelev, A.V., Tankeyev, A.P., Ustinov, V.V.
Format: Article
Language:English
Subjects:
Exchange coupling — biquadratic
Ferromagnetic resonance
Multilayers
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Summary:Magnetic resonance frequencies in a magnetic trilayer or superlattice are theoretically studied. Biquadratic exchange between layers is assumed to be sufficiently strong for non-collinear (canted) magnetic ordering to exist in the multilayer. The optic mode frequency turns out to vanish at the boundary between antiferromagnetic and canted states. It is shown that in the case of longitudinal pumping one can observe the resonance at two different values of magnetic field strength.
ISSN:0304-8853
DOI:10.1016/S0304-8853(96)00594-X