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

D. Schick, A. Bojahr, M. Herzog, P. Gaal, I. Vrejoiu, and M. Bargheer
Phys. Rev. Lett. 110, 095502 – Published 26 February 2013

Abstract

We investigate coherent phonon propagation in a thin film of ferroelectric PbZr0.2Ti0.8O3 (PZT) by ultrafast x-ray diffraction experiments, which are analyzed as time-resolved reciprocal space mapping 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 time scale, which is not observed for out-of-plane compression.

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  • Received 24 October 2012

DOI:https://doi.org/10.1103/PhysRevLett.110.095502

© 2013 American Physical Society

Authors & Affiliations

D. Schick1, A. Bojahr1, M. Herzog1, P. Gaal2, I. Vrejoiu3, and M. Bargheer1,2,*

  • 1Institut für Physik und Astronomie, Universität Potsdam, Karl-Liebknecht-Straße 24-25, 14476 Potsdam, Germany
  • 2Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Wilhelm-Conrad-Röntgen Campus, BESSY II, Albert-Einstein-Straße 15, 12489 Berlin, Germany
  • 3Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, 06120 Halle, Germany

  • *bargheer@uni-potsdam.de

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Vol. 110, Iss. 9 — 1 March 2013

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