Simultaneous multi-bragg peak coherent X-ray diffraction imaging

Florian Lauraux, Stéphane Labat, Sarah Yehya, Marie Ingrid Richard, Steven J. Leake, Tao Zhou, Jean Sébastien Micha, Odile Robach, Oleg Kovalenko, Eugen Rabkin, Tobias U. Schülli, Olivier Thomas, Thomas W. Cornelius

Research output: Contribution to journalArticlepeer-review

Abstract

The simultaneous measurement of two Bragg reflections by Bragg coherent X-ray diffraction is demonstrated on a twinned Au crystal, which was prepared by the solid-state dewetting of a 30 nm thin gold film on a sapphire substrate. The crystal was oriented on a goniometer so that two lattice planes fulfill the Bragg condition at the same time. The Au 111 and Au 200 Bragg peaks were measured simultaneously by scanning the energy of the incident X-ray beam and recording the diffraction patterns with two two-dimensional detectors. While the former Bragg reflection is not sensitive to the twin boundary, which is oriented parallel to the crystal-substrate interface, the latter reflection is only sensitive to one part of the crystal. The volume ratio between the two parts of the twinned crystal is about 1:9, which is also confirmed by Laue microdiffraction of the same crystal. The parallel measurement of multiple Bragg reflections is essential for future in situ and operando studies, which are so far limited to either a single Bragg reflection or several in series, to facilitate the precise monitoring of both the strain field and defects during the application of external stimuli.

Original languageEnglish
Article number312
JournalCrystals
Volume11
Issue number3
DOIs
StatePublished - 2021

Keywords

  • Au crystal
  • Bragg coherent x-ray diffraction imaging (bcdi)
  • Twin boundary

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • General Chemical Engineering
  • General Materials Science
  • Inorganic Chemistry

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