Crystal symmetry in single domains of PbZr0.54 Ti0.46 O3

Roland Schierholz, Hartmut Fuess, Kenji Tsuda, Yoishiro Ogata, Masami Terauchi, Ralf Theissmann

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33 Citations (Scopus)


This work focuses on the crystal symmetry of morphotropic PbZrx Ti1-x O3 (PZT). The crystal symmetry is investigated within single domains of ≈30-100nm width by convergent beam electron diffraction (CBED). The composition PbZr0.54 Ti0.46 O3 was chosen for experiments at room temperature and ≈300°C. The observed zone axis symmetry at room temperature was a (1̄ 10) mirror in some domains whereas symmetry was broken in neighboring domains. Therefore the highest crystal symmetry that can be attributed with certainty to the probed volume is monoclinic. The local symmetry of single cells might be lower due to disordered displacements of the cations. At ≈300°C the zone axis symmetry had changed to a (100) pc mirror that only occurs in the tetragonal phase of PZT.

Original languageEnglish
Article number024118
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number2
Publication statusPublished - 2008 Jul 29


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