X-Ray Scattering at FeCo(001) Surfaces and the Crossover between Ordinary and Normal Transitions

Abstract

In a recent experiment by Krimmel et al. [PRL 78, 3880 (1997)], the critical behavior of FeCo near a (001) surface was studied by x-ray scattering. Here the experimental data are reanalyzed, taking into account recent theoretical results on order-parameter profiles in the crossover regime between ordinary and normal transitions. Excellent agreement between theoretical expectations and the experimental results is found.

9 pages, Latex, 1 PostScript figure, to be published in Phys.Rev.B

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