Periodically poled KTA crystal investigated using coherent X-ray beams

P. Pernot-Rejmánková*, P. A. Thomas, P. Cloetens, F. Lorut, J. Baruchel, Z. W. Hu, P. Urenski, G. Rosenman

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


The distribution of inverted ferroelectric domains on the surface and within the bulk of a periodically poled KTA (KTiOAsO4) single crystal has been observed using a simple X-ray diffraction imaging setup which takes advantage of the highly coherent beams available at a third-generation synchrotron source, such as the ESRF. This technique allows one to reveal the phase difference between the waves that are Bragg diffracted from adjacent domains via free-space propagation (Fresnel diffraction). The phase difference of the diffracted waves is mainly produced by the difference in phases of the structure factors involved, and contains precise structural information about the nature of the domain walls.

Original languageEnglish
Pages (from-to)1149-1153
Number of pages5
JournalJournal of Applied Crystallography
Issue number4
StatePublished - 2000


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