Speaker
Prof.
Rajeev Ranjan
(Indian Institute of Science Bangalore. India)
Description
The structural complexities in the Na0.5Bi0.5TiO3 (NBT)-based Pb-free piezoelectrics pose significant challenge regarding understanding of the structure-property correlation. While the critical compositions exhibiting maximum weak-signal piezoelectric response is generally associated to an inter-ferroelectric instability, a combined neutron diffraction and piezoelectric study on three NBT-based systems namely Na0.5Bi0.5TiO3 -BaTiO3, Na0.5Bi0.5TiO3 – K0.5Bi0.5TiO3 and Na0.5Bi0.5TiO3 -SrTiO3 revealed that the maximum piezoelectric response is determined primarily by an in-phase tilt disorder in these systems and not by the inter-ferroelectric instability.
Primary author
Prof.
Rajeev Ranjan
(Indian Institute of Science Bangalore. India)
Co-authors
Mr
Gobinda Das Adhikary
(Indian Institute of Science, Bangalore)
Anatoliy Senyshyn
