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In situ investigation of the non-linear optical crystal rubidium titanyl arsenate, RbTiOAsO4, under applied electric field using X-ray imaging
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Walker, David, Thomas, Pam A., Pernot-Rejmankova, P. and Baruchel, J. (2007) In situ investigation of the non-linear optical crystal rubidium titanyl arsenate, RbTiOAsO4, under applied electric field using X-ray imaging. Journal of Applied Crystallography, Vol.40 (No.3). pp. 505-512. doi:10.1107/S0021889807011569 ISSN 0021-8898.
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Official URL: http://dx.doi.org/10.1107/S0021889807011569
Abstract
Recent work on the non-linear optical single-crystal rubidium titanyl arsenate (RbTiOAsO4, RTA) has shown that it exhibits behaviour consistent with a ferroelectric semiconductor under large applied electric fields, with the development of a non-uniform field in the near-surface region. To confirm aspects of the proposed model, the behaviour of 001 slices of initially single-domain RTA, patterned with periodic Ag electrodes of spacing 38 mm, as for periodic poling in non-linear optics, were investigated using synchrotron X-ray section topography with the electric field applied in situ while under X-ray illumination at the ID19 topography beamline of the ESRF, Grenoble. The results of white-beam section topography as both a function of crystal to film distance, and under DC voltage are reported, confirming that there is a bending of the planes in the near-surface region. The strain in the near-surface region was examined directly using high-resolution monochromatic X-ray section topography. This revealed an extensive strain of 3 (+/- 1) x 10(-4) at 1 kV, indicating that the electrostrictive coefficient, gamma(3333), in RTA is positive in sign.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QD Chemistry | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Journal or Publication Title: | Journal of Applied Crystallography | ||||
Publisher: | Wiley-Blackwell Publishing Ltd. | ||||
ISSN: | 0021-8898 | ||||
Official Date: | June 2007 | ||||
Dates: |
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Volume: | Vol.40 | ||||
Number: | No.3 | ||||
Number of Pages: | 8 | ||||
Page Range: | pp. 505-512 | ||||
DOI: | 10.1107/S0021889807011569 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
Data sourced from Thomson Reuters' Web of Knowledge
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