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Calculations of Bulk and Surface Magnetic Polaritons in Modulated Antiferromagnetic / Non-Magnetic Superlattices

Published online by Cambridge University Press:  03 September 2012

Fred Lacy ,
Ernest L. Carter Jr  and
Steven L. Richardson
Fred Lacy
Affiliation:
Department of Electrical Engineering and Materials Science Research Center, School of Engineering, Howard University, 2300 Sixth Street NW, Washington, DC 20059
Ernest L. Carter Jr
Affiliation:
Department of Electrical Engineering and Materials Science Research Center, School of Engineering, Howard University, 2300 Sixth Street NW, Washington, DC 20059
Steven L. Richardson
Affiliation:
Department of Electrical Engineering and Materials Science Research Center, School of Engineering, Howard University, 2300 Sixth Street NW, Washington, DC 20059
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Abstract

Recent advances in molecular beam epitaxy have renewed research on the physics of artificially structured magnetic superlattices. In particular, there has been much theoretical research on the propagation of magnetic spin waves or magnetic polaritons in magnetic superlattices.1 In this work, we have studied the effect of modulating both the period of an antiferromagnetic/non-Magnetic semi-infinite superlattice and the relative thickness of its individual layers to see how the dispersion relationships co (k) for bulk and surface magnetic polaritons are effected. We have also calculated the effect of an external magnetic field on (u (k) and our calculation goes beyond the magnetostatic approximation by taking retardation effects into account.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 313: Symposium Q1 – Magnetic Ultrathin Films, Multilayers and Surfaces/Magnetic Interfaces-Physics and Characterizations , 1993 , 65
Copyright
Copyright © Materials Research Society 1993

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References

REFERENCES

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