Finite-size-effect on a very large length scale in NBT-based lead-free piezoelectrics

Journal of Advanced Dielectrics. 2019;9(5):1950035-1-1950035-7 DOI 10.1142/S2010135X19500358

 

Journal Homepage

Journal Title: Journal of Advanced Dielectrics

ISSN: 2010-135X (Print); 2010-1368 (Online)

Publisher: World Scientific Publishing

LCC Subject Category: Science: Physics: Electricity and magnetism: Electricity

Country of publisher: Singapore

Language of fulltext: English

Full-text formats available: PDF

 

AUTHORS

Anupam Mishra (Department of Materials Engineering, Indian Institute of Science, Bangalore-560012, India)
Dipak Kumar Khatua (Department of Materials Engineering, Indian Institute of Science, Bangalore-560012, India)
Gobinda Das Adhikary (Department of Materials Engineering, Indian Institute of Science, Bangalore-560012, India)
Naveen Kumar (Department of Materials Engineering, Indian Institute of Science, Bangalore-560012, India)
Uma Shankar (Department of Materials Engineering, Indian Institute of Science, Bangalore-560012, India)
Rajeev Ranjan (Department of Materials Engineering, Indian Institute of Science, Bangalore-560012, India)

EDITORIAL INFORMATION

Peer review

Editorial Board

Instructions for authors

Time From Submission to Publication: 18 weeks

 

Abstract | Full Text

Na0.5Bi0.5TiO3-based lead-free piezoelectrics are considered for potential replacement of the lead-based commercial piezoceramics in high-power transducer applications. We have examined the role of grain size in influencing the structural-polar inhomogeneity of stoichiometric and off-stoichiometric Na0.5Bi0.5TiO3 (NBT), and its morphotropic-phase-boundary (MPB) derivative 0.94Na0.5Bi0.5TiO3-0.06BaTiO3 (NBT-6BT). Our study reveals that size effect comes into play in these systems on a very large length scale (on the scale of microns) considerably affecting its global structure and properties.