Origin of the enhanced piezoelectric thermal stability in BiScO3-PbTiO3 single crystals

Authors

Lingping Kong, Center for High Pressure Science and Technology Advanced Research
Gang Liu, Center for High Pressure Science and Technology Advanced Research
Shujun Zhang, Pennsylvania State UniversityFollow
Wenge Yang, Carnegie Institute of Washington

RIS ID

125917

Publication Details

Kong, L., Liu, G., Zhang, S. & Yang, W. (2015). Origin of the enhanced piezoelectric thermal stability in BiScO3-PbTiO3 single crystals. Applied Physics Letters, 106 (23), 232901-1-232901-5.

Abstract

BiScO 3 -PbTiO 3 single crystals were reported to possess high piezoelectric coefficient of 1200 pC/N and Curie temperature of > 400°C, exhibiting excellent thermal stability of properties up to 350°C. However, the origin of the thermal stability is yet unclear. In this research, high resolution synchrotron-based technique was used to study the temperature driven structural evolution in BiScO 3 -PbTiO 3 system, where two competing symmetries and local distortion were observed, accounting for the high piezoelectric activity. A strong correlation between thermal stability of structure and temperature-dependent properties was established, which will benefit the design of ferroelectric materials with broad temperature usage range.