Dec 7 – 8, 2021 Online only
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On the nature of critical compositions of Na0.5Bi0.5TiO3-based lead-free piezoelectrics

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Dec 7, 2021, 2:05 PM
Talk Structure Research Structure Research


Prof. Rajeev Ranjan (Indian Institute of Science Bangalore. India)


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)


Mr Gobinda Das Adhikary (Indian Institute of Science, Bangalore) Anatoliy Senyshyn

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