David B. Mitzi
Journal of Materials Chemistry
The positions of x-ray diffraction peaks from a polycrystalline iron oxide thin film have been measured in a grazing-incidence, asymmetric Bragg geometry for incidence angles between 0.09°and 1.04°. The peak positions are shifted from the Bragg angles 2,B due to refraction of the incident x rays as they penetrate the air-solid interface. The shifts are quantitatively consistent with those obtained by applying Fresnel boundary conditions for reflection and refraction of a plane electromagnetic wave at an interface between air and a uniform, absorbing dielectric and they provide confidence in the validity of the Fresnel boundary conditions in the x-ray regime. © 1989 The American Physical Society.
David B. Mitzi
Journal of Materials Chemistry
R.J. Gambino, N.R. Stemple, et al.
Journal of Physics and Chemistry of Solids
Michael Ray, Yves C. Martin
Proceedings of SPIE - The International Society for Optical Engineering
U. Wieser, U. Kunze, et al.
Physica E: Low-Dimensional Systems and Nanostructures