2021 journal article

Orientation-dependent, field-induced phase transitions in soft lead zirconate titanate piezoceramics

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 41(6), 3357–3362.

By: J. Zhao n, S. Funni n, E. Molina n, E. Dickey n  & J. Jones n

co-author countries: United States of America πŸ‡ΊπŸ‡Έ
author keywords: PZT piezoceramics; In situ high-energy XRD; Orientation-dependent phase transitions
Source: Web Of Science
Added: May 3, 2021

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.