0308224 - ÚPT 2008 RIV US eng J - Journal Article
Krčmář, J. - Holý, V. - Horák, L. - Metzger, T. H. - Sobota, Jaroslav
Standing-wave effects in grazing-incidence x-ray diffraction from polycrystalline multilayers.
[Rentgenová difrakce stojaté vlny na polykrystalických multivrstvách.]
Journal of Applied Physics. Roč. 103, č. 3 (2008), 033504:1-7. ISSN 0021-8979. E-ISSN 1089-7550
Institutional research plan: CEZ:AV0Z20650511
Keywords : acoustic wave interference * carbon * crystallites * interface structure * nickel * optical multilayers * superlattices * X-ray diffraction
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 2.201, year: 2008 ; AIS: 0.945, rok: 2008
DOI: https://doi.org/10.1063/1.2836974

The intensity of x-ray diffraction from a polycrystalline multilayer in a grazing-incidence scattering geometry is modulated by a standing wave created by the interference of the radiation transmitted through the multilayer stack with the wave field specularly reflected from the superlattice interfaces. Similarly, the radiation being diffracted from the polycrystalline structure is reflected specularly from the interfaces and a standing-wave interference pattern results as well. This effect is demonstrated by a series of diffraction measurements on C/Ni periodic multilayers; the experimental data have been modeled using the distorted-wave Born approximation and a very good correspondence with the experiments was achieved. The method was used for the study of the profiles of the crystallite sizes and strains in multilayers.

Intenzita rentgenové difrakce na polykrystalických multivrstvách v grazing-incidence geometrii je modulována stojatou vlnou, vytvořenou interferencí prošlého a odraženého záření na rozhraních v multivrstvě. Tento efekt je demonstrován na C/Ni multivrstvách, experimentální data byla modelována DWBA teorií a výsledkem je velikost polykrystalických zrn a jejich vertikální poloha v závislosti na hloubce v multivrstvě.
Permanent Link: http://hdl.handle.net/11104/0160775