The effect of interface roughness on the intensity profiles of Bragg peaks from superlattices

D. Chrzan*, P. Dutta

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

Abstract

We have derived an expression for the structure factor of a superlattice with "rough" interfaces, i.e., with random variations in the thicknesses of the layers. Our expression allows the determination of x-ray diffraction profiles in both radial (θ-2θ) and rocking scans. We have shown that the rocking curve of the central peak is essentially unaffected by this kind of disorder; and we have calculated the rocking curve widths of the satellites as a function of roughness. The implications of our model for the use of satellite/central peak intensity ratios as a measure of superlattice perfection are discussed.

Original languageEnglish (US)
Pages (from-to)1504-1507
Number of pages4
JournalJournal of Applied Physics
Volume59
Issue number5
DOIs
StatePublished - 1986

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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