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

Na 0 . 5 Bi 0 . 5 TiO3-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-stoichi...

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Published inJournal of advanced dielectrics Vol. 9; no. 5; pp. 1950035 - 1950035-7
Main Authors Mishra, Anupam, Khatua, Dipak Kumar, Adhikary, Gobinda Das, Kumar, Naveen, Shankar, Uma, Ranjan, Rajeev
Format Journal Article
LanguageEnglish
Published Singapore World Scientific Publishing Company 01.10.2019
World Scientific Publishing Co. Pte., Ltd
World Scientific Publishing
Subjects
crystal structure
depolarization temperature
Grain size
Inhomogeneity
Lead free
lead-free piezoelectrics
na0.5bi0.5tio3
Piezoelectric ceramics
size effect
Size effects
crystal structure
Lead-free piezoelectrics
depolarization temperature
size effect
TiO3
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Summary:Na 0 . 5 Bi 0 . 5 TiO3-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 Na 0 . 5 Bi 0 . 5 TiO3 (NBT), and its morphotropic-phase-boundary (MPB) derivative 0.94 Na 0 . 5 Bi 0 . 5 TiO3-0.06BaTiO3 (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.
Bibliography:This paper was originally submitted to the special issue on lead-free piezo/ferroelectric materials.
ISSN:2010-135X
2010-1368
DOI:10.1142/S2010135X19500358