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Phys. Rev. B 54, 11903–11906 (1996)

[Issue 17 – 1 November 1996 ]

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Spin-wave hybridization and magnetic anisotropies in a thick bcc cobalt film

X. Liu, R. L. Stamps, and R. Sooryakumar

Department of Physics, The Ohio State University, Columbus, Ohio 43210

G. A. Prinz

Naval Research Laboratory, Washington, D.C. 20375

Magnetic anisotropies of a 357 Å thick Co film were examined using Brillouin light scattering. The Co has bcc structure, and was found to have a significant fourfold anisotropy in addition to a strong uniaxial anisotropy. This film is one of the thickest bcc Co structures and we find that the surface and n=1 bulk spin waves have comparable frequencies and are strongly mixed. Unusual behavior of the scattering intensities suggest the possible presence of inhomogeneous internal fields that result in a different dependence for the bulk mode frequencies on field orientation than for the surface mode.

©1996 The American Physical Society

URL: http://link.aps.org/abstract/PRB/v54/p11903
DOI: 10.1103/PhysRevB.54.11903
PACS: 62.20.Dc, 78.35.+c, 75.30.Ds

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