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A rapid two-dimensional data collection system for the study of ferroelectric materials under external applied electric fields

Vergentev, Tikhon ; Bronwald, Iurii ; Chernyshov, Dmitry ; [weitere]

International Union of Crystallography (IUCr) ; 2016

In: Journal of Applied Crystallography Vol. 49, No. 5 ( 2016-10-01), p. 1501-1507

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In: Journal of Applied Crystallography, International Union of Crystallography (IUCr), Vol. 49, No. 5 ( 2016-10-01), p. 1501-1507

Kurzfassung: Synchrotron X-rays on the Swiss Norwegian Beamline and BM28 (XMaS) at the ESRF have been used to record the diffraction response of the PMN–PT relaxor piezoelectric 67% Pb(Mg 1/3 Nb 2/3 )O 3 –33% PbTiO 3 as a function of externally applied electric field. A DC field in the range 0–18 kV cm −1 was applied along the [001] pseudo-cubic direction using a specially designed sample cell for in situ single-crystal diffraction experiments. The cell allowed data to be collected on a Pilatus 2M area detector in a large volume of reciprocal space using transmission geometry. The data showed good agreement with a twinned single-phase monoclinic structure model. The results from the area detector were compared with previous Bragg peak mapping using variable electric fields and a single detector where the structural model was ambiguous. The coverage of a significantly larger section of reciprocal space facilitated by the area detector allowed precise phase analysis.

Materialart: Online-Ressource

ISSN: 1600-5767

URL: Article