Octahedral tilt transitions in relaxed epitaxial Pb(Zr1-xTi x)O3 films

Daniel S. Tinberg, Raegan L. Johnson-Wilke, Dillon D. Fong, Timothy T. Fister, Stephen K. Streiffer, Yisong Han, Ian M. Reaney, Susan Trolier-Mckinstry

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6 Scopus citations

Abstract

Relaxed epitaxial {100}pc and {111}pc oriented films (350 nm) of Pb(Zr1-xTix)O3 (0.2 ≤ x ≤ 0.4) on SrRuO3/SrTiO3 substrates were grown by pulsed laser deposition and studied using high resolution synchrotron X-ray diffraction and transmission electron microscopy. The dielectric behavior and ferroelectric phase transition temperatures of the films were consistent with bulk PZT. However, weak 1/2{311}pc reflections in x-ray diffraction profiles were recorded above bulk TTilt (as indicated in the Jaffe, Cooke, and Jaffe phase diagram, where pc denotes pseudocubic indices). Moreover, anomalies in the dielectric and ferroelectric response were detected above T Tilt which are explained by coupling of short coherence or weakly tilted regions to the ferroelectric polarization.

Original languageEnglish
Article number094104
JournalJournal of Applied Physics
Volume109
Issue number9
DOIs
StatePublished - May 1 2011
Externally publishedYes

Funding

Financial support for this work is provided by the Engineering and Physical Science Research Council UK (EP/D067049/1G) and by the National Science Foundation (Materials World Network, DMR-0602770). Research at Argonne and use of the Advanced Photon Source and Center for Nanoscale Materials were supported by the U. S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357. D. Tinberg would like to thank Dr. Jenia Karapetrova and Peter Baldo at Argonne National Laboratory for assisting in setting up the synchrotron diffraction experiments. Y. Han would like to thank Professors Paula Vilarinho and Augusto Lopes at the University of Aveiro, Portugal, and Dr. Alan Harvey at the University of Manchester for providing the TEM facilities for performing the low and high temperature experiments, respectively.

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