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Ellipsometric, Magneto-Optic, and Magnetic Properties of Sputtered Rare Earth-Transition Metal Multilayers

  • Thomas E. Tiwald (a1), John A. Woollam (a1), Z. S. Shan (a2) and D. J. Sellmyer (a2)

Abstract

Ellipsometric and magneto-optical properties of amorphous Dy (3.5 Å) and amorphous Fe (25 Å to 12.5 Å) multilayers were investigated over the spectral range from 3000 Å to 8000 Å in magnetic fields to 0.21 Tesla. In this range of layer thickness the magnetic anisotropy is vertical. Kerr rotations, θk, were weakly spectrally dependent, and as large as 0.1 degrees. The diagonal and off-diagonal elements of the optical dielectric response function were determined over the full spectral range, and were found to be dependent on iron layer thickness.

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References

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1. Azzam, R. M. A. and Bashara, N. M., Ellipsometry and Polarized Light, North Holland Publishing, New York, NY (1976).
2. Freiser, M. J., IEEE Trans. Mags. MAG–4, 152 (1968).
3. Parker, M., Magneto-optics of Thin Magnetic Films, Reference T29, SPIE Symposium Proceedings (1987), to be published.
4. See for example, Falco, C. M., Schuller, I. K., in Novel Materials and Techniques in Condensed Matter, Crabtree, G. and Vashishta, P., eds. North Holland Publishing, New York, NY (1982).
5. See Proceedings of MMM Conferences, published annually in the Journal of Applied Physics.

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