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Lyford TS, Collins SP, Fewster PF, et al. X-ray investigation of lateral hetero-structures of inversion domains in LiNbO3, KTiOPO4 and KTiOAsO4. Acta Crystallogr A Found Adv. 2015;71:255-67doi: 10.1107/S2053273315001503.
Lyford, T. S., Collins, S. P., Fewster, P. F., Thomas, P. A., Adams, R. S., Turns, J., & Atman, C. J. (2015). X-ray investigation of lateral hetero-structures of inversion domains in LiNbO3, KTiOPO4 and KTiOAsO4. Acta crystallographica. Section A, Foundations and advances, 71255-67. https://doi.org/10.1107/S2053273315001503
Lyford, Thomas S, et al. "X-ray investigation of lateral hetero-structures of inversion domains in LiNbO3, KTiOPO4 and KTiOAsO4." Acta crystallographica. Section A, Foundations and advances vol. 71 (2015): 255-67. doi: https://doi.org/10.1107/S2053273315001503
Lyford TS, Collins SP, Fewster PF, Thomas PA, Adams RS, Turns J, Atman CJ. X-ray investigation of lateral hetero-structures of inversion domains in LiNbO3, KTiOPO4 and KTiOAsO4. Acta Crystallogr A Found Adv. 2015 May;71:255-67. doi: 10.1107/S2053273315001503. Epub 2015 Mar 13. PMID: 25921494; PMCID: PMC4413913.
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Acta Crystallogr A Found Adv. 2015 May;71:255-67. doi: 10.1107/S2053273315001503. Epub 2015 Mar 13.

X-ray investigation of lateral hetero-structures of inversion domains in LiNbO3, KTiOPO4 and KTiOAsO4.

Acta crystallographica. Section A, Foundations and advances

Thomas S Lyford, Stephen P Collins, Paul F Fewster, Pamela A Thomas, Adams, Turns, Atman

Affiliations

  1. Panalytical Research, The Sussex Innovation Centre, Falmer, Brighton, BN1 9SB, England.
  2. Diamond Light Source Ltd, Diamond House, Harwell Science and Innovation Campus, Didcot, Oxfordshire, OX11 0DE, England.
  3. Department of Physics, University of Warwick, CV4 7AL, England.

PMID: 25921494 PMCID: PMC4413913 DOI: 10.1107/S2053273315001503

Abstract

In this paper periodically domain-inverted (PDI) ferroelectric crystals are studied using high-resolution X-ray diffraction. Rocking curves and reciprocal-space maps of the principal symmetric Bragg reflections in LiNbO3 (LN) (Λ = 5 µm), KTiOPO4 (KTP) (Λ = 9 µm) and KTiOAsO4 (KTA) (Λ = 39 µm) are presented. For all the samples strong satellite reflections were observed as a consequence of the PDI structure. Analysis of the satellites showed that they were caused by a combination of coherent and incoherent scattering between the adjacent domains. Whilst the satellites contained phase information regarding the structure of the domain wall, this information could not be rigorously extracted without a priori knowledge of the twinning mechanism. Analysis of the profiles reveals strain distributions of Δd/d = 1.6 × 10(-4) and 2.0 × 10(-4) perpendicular to domain walls in KTP and LN samples, respectively, and lateral correlation lengths of 63 µm (KTP), 194 µm (KTA) and 10 µm (LN). The decay of crystal truncation rods in LN and KTP was found to support the occurrence of surface corrugations.

Keywords: coherence; diffraction; ferroelectrics; grating; synchrotron radiation

References

  1. J Synchrotron Radiat. 1998 Sep 1;5(Pt 5):1263-9 - PubMed

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