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arXiv · 1301.3336

Following Strain-Induced Mosaicity Changes of Ferroelectric Thin Films by Ultrafast Reciprocal Space Mapping

D. Schick·A. Bojahr·M. Herzog·P. Gaal·I. Vrejoiu·M. Bargheer
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Abstract

We investigate coherent phonon propagation in a thin film of ferroelectric PbZr0.2Ti0.8O3 (PZT) by ultrafast x-ray diffraction (UXRD) experiments, which are analyzed as time-resolved reciprocal space mapping (RSM) in order to observe the in- and out-of-plane structural dynamics simultaneously. The mosaic structure of the PZT leads to a coupling of the excited out-of-plane expansion to in-plane lattice dynamics on a picosecond timescale, which is not observed for out-of-plane compression.

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D. Schick, A. Bojahr, M. Herzog, P. Gaal, I. Vrejoiu, M. Bargheer. 2013-01-15. Following Strain-Induced Mosaicity Changes of Ferroelectric Thin Films by Ultrafast Reciprocal Space Mapping. https://doi.org/10.1103/physrevlett.110.095502

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