Maurya, Deepam and Kumar, Ashok and Petkov, Valeri and Mahaney, James E. and Katiyar, Ram S. and Priya, Shashank (2014) Local structure and piezoelectric instability in lead-free (1-x)BaTiO3-xA(Cu1/3Nb2/3)O-3 (A = Sr, Ca, Ba) solid solutions. RSC Advances, 4 (3). pp. 1283-1292. ISSN 2046-2069

PDF - Published Version
Download (1650Kb) | Preview


This study provides a fundamental understanding of the enhanced piezoelectric instability in ABO(3) perovskite based lead-free piezoelectric materials. For this we synthesized (1 - x)BaTiO3-xA(Cu1/3Nb2/3)O-3 (A: Sr, Ba and Ca and x = 0.0-0.03) solid solutions exhibiting high piezoelectric response. The piezoelectric instability in these compositions was found to increase with x despite monotonous decrease in the long range polar ordering. High energy X-ray diffraction coupled with atomic pair distribution functions (PDF)s indicated an increase in local polarization. Raman scattering and EPR analysis revealed that substitutions on A and B sites both substantially perturbed the local octahedral dynamics and resulted in localized nano polar regions which imparted the high piezoelectric response.

Item Type: Article
Subjects: Chemistry
Depositing User: Dr. Rajpal Walke
Date Deposited: 19 Oct 2015 07:42
Last Modified: 19 Oct 2015 07:42

Actions (login required)

View Item View Item