Diffracted magneto-optical Kerr effect in one-dimensional magnetic gratings

Kim, J. B.; Lu, Y. H.; Cho, M. H.; Lee, G. J.; Lee, Y. P.; Rhee, J. Y.; Yoon, C. S.
April 2009
Applied Physics Letters;4/13/2009, Vol. 94 Issue 15, p151110
Academic Journal
One-dimensional Co2MnSi magnetic gratings were fabricated with a significant ease by using the interference pattern of two femtosecond-laser beams which resulted in a selective-area annealing of the as-deposited Co2MnSi film. The longitudinal Kerr rotation of the negative first-order diffracted beam was nearly 30 times larger than that of the zeroth-order one in a sample fabricated with the optimal conditions. The enhancement strongly depends on the grating depth, which varies with the number of laser shots, confirming the theoretical result that the magneto-optical Kerr-effect enhancement is reduced as the grating depth increases.


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