1. Orientation-dependent, field-induced phase transitions in soft lead zirconate titanate piezoceramics
- Author
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Stephen Funni, Elizabeth C. Dickey, Jacob L. Jones, Jianwei Zhao, and Emily R. Molina
- Subjects
010302 applied physics ,Diffraction ,Phase transition ,Phase boundary ,Materials science ,Condensed matter physics ,02 engineering and technology ,021001 nanoscience & nanotechnology ,Lead zirconate titanate ,01 natural sciences ,Piezoelectricity ,Ferroelectricity ,chemistry.chemical_compound ,Tetragonal crystal system ,chemistry ,0103 physical sciences ,Materials Chemistry ,Ceramics and Composites ,Crystallite ,0210 nano-technology - Abstract
In situ high-energy X-ray diffraction (XRD) was performed on lead-zirconate-titanate-based ferroelectric materials with composition near the morphotropic phase boundary (MPB). The utilization of the two-dimensional area detector in in situ field-dependent experiments enables the complete analysis of the material response with respect to all azimuthal angles at each field amplitude. The studies reveal that the field-induced phase transition from tetragonal to rhombohedral is dependent on crystal orientation in Nb-doped PbZr0.53Ti0.47O3 that is in close compositional proximity to the MPB. However, only domain wall motion is activated in Nb-doped PbZr0.50Ti0.50O3, which is further in composition from the MPB. This synchrotron-based XRD characterization approach illustrates the importance in evaluating the orientation-dependence of phase transitions in piezoelectric and ferroelectric polycrystalline materials.
- Published
- 2021