Analytic expressions of the general magneto-optical Kerr effects for a nanometer-thick magnetic layer with a capping layer

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We have formulated analytic expressions for magneto-optical Kerr effect (MOKE) of a magnetic layer covered by a capping layer, when two layers are optically thin enough. Within the first order of the thickness of the magnetic and capping layers, the polar and longitudinal magneto-optical Kerr effects of p and s polarized waves can be approximated with simple closed forms for the general cases of an arbitrary oblique incident angle. It is found that the capping layer thickness dependent part can be separated from the first-order term of the magnetic layer thickness, and it turns out to be the simple form for the normal incident case. The validity of the approximated expressions was examined by comparison with the exact numerical solutions, and it is confirmed that the estimated error was small enough for optically thin enough magnetic and capping layers. (C) 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Publisher
WILEY-V C H VERLAG GMBH
Issue Date
2004-06
Language
English
Article Type
Article; Proceedings Paper
Keywords

FORMULAS; FILMS

Citation

PHYSICA STATUS SOLIDI B-BASIC RESEARCH, v.241, pp.1406 - 1410

ISSN
0370-1972
DOI
10.1002/pssb.200304660
URI
http://hdl.handle.net/10203/84076
Appears in Collection
RIMS Journal Papers
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