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Effect of thermal profile on a shift in phase transition temperature of Sb-doped KNN piezoceramic
Author(s)
Date Issued
January 1, 2021
Type
Article
Abstract
This work investigated the impact of the thermal profile in the shift of phase transition temperature for KNNS piezoceramic, using high-resolution synchrotron x-ray powder diffraction (SXPD) and dielectric measurement. The temperature-dependent dielectric permittivity and SXPD profile showed that all phase transformations occurred at higher temperature under heating than under cooling. Moreover, under cooling from 227 °C to −163 °C and reheating to 227 °C, none of the unit-cell volumes fully recovered to their initial size. These results suggest that the change in unit-cell volume under heating/cooling plays a significant role in the shift of phase transition temperatures that was observed.
Citation
Ferroelectrics, 572(1), 27-35, 2021