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Enhanced torsional actuation and stress coupling in Mn-modified 0.93(Na0.5Bi0.5TiO3)-0.07BaTiO3 lead-free piezoceramic system
- Source :
- Science and Technology of Advanced Materials, Vol 18, Iss 1, Pp 51-59 (2017)
- Publication Year :
- 2017
- Publisher :
- Taylor & Francis Group, 2017.
-
Abstract
- This paper is concerned with the development of a piezoelectric d15 shear-induced torsion actuator made of a lead-free piezoceramic material exhibiting giant piezoelectric shear stress coefficient (e15) and piezoelectric transverse shear actuation force comparable to that of lead-based shear-mode piezoceramics. The Mn-modified 0.93(Na0.5Bi0.5TiO3)-0.07BaTiO3 (NBT-BT-Mn) composition exhibited excellent properties as a torsional transducer with piezoelectric shear stress coefficient on the order of 11.6 C m–2. The torsional transducer, consisting of two oppositely polarized NBT-BT-Mn d15 mode piezoceramic shear patches, provided a rate of twist of 0.08 mm m–1 V–1 under quasi-static 150 V drive. The high value of piezoelectric shear d15 coefficient in NBT-BT-Mn sample further demonstrated its potential in practical applications. These results confirm that the lead-free piezoceramics can be as effective as their lead-based counterparts.
Details
- Language :
- English
- ISSN :
- 14686996 and 18785514
- Volume :
- 18
- Issue :
- 1
- Database :
- Directory of Open Access Journals
- Journal :
- Science and Technology of Advanced Materials
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.1e20f18acb7a4e8d98c9d975b9bd6a0c
- Document Type :
- article
- Full Text :
- https://doi.org/10.1080/14686996.2016.1254569