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Analytic expressions of the general magneto‐optical Kerr effects for a nanometer‐thick magnetic layer with a capping layer
Author(s) -
You ChunYeol,
Shin SungChul
Publication year - 2004
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200304660
Subject(s) - layer (electronics) , polar , nanometre , oblique case , condensed matter physics , kerr effect , optics , simple (philosophy) , magneto , physics , magneto optic kerr effect , materials science , exact solutions in general relativity , quantum mechanics , nanotechnology , linguistics , philosophy , power (physics) , epistemology , nonlinear system
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. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)