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Grain size dependent electrostrain in Bi1/2Na1/2TiO3-SrTiO3 incipient piezoceramics.
- Source :
-
Journal of the European Ceramic Society . Sep2016, Vol. 36 Issue 11, p2849-2853. 5p. - Publication Year :
- 2016
-
Abstract
- The electrical properties and microstructures of (1 − x ) Bi 1/2 Na 1/2 TiO 3 – x SrTiO 3 (BNT-ST100 x , 0.20 ≤ x ≤ 0.30) piezoceramics with different grain size distributions were investigated. The critical region separating the ferroelectric from ergodic relaxor is located around x = 0.26. Strains up to 0.2% could be achieved under a low driving fields ( E < 2 kV/mm) in the BNT-ST26 composition resulting in excellent actuating performance of S max /E max >1000 pm/V. The electrostrain was largely depended on the grain size and an increment of strain up to ∼38% can be realized by increasing the grain size from 5 μm to 13 μm in the BNT-ST26 samples. The results indicate that the field-induced strain performance of BNT-based incipient piezoelectric ceramics can be tailored via microstructure modifications, an alternative strategy to enhance the electromechanical properties. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09552219
- Volume :
- 36
- Issue :
- 11
- Database :
- Academic Search Index
- Journal :
- Journal of the European Ceramic Society
- Publication Type :
- Academic Journal
- Accession number :
- 115218187
- Full Text :
- https://doi.org/10.1016/j.jeurceramsoc.2016.04.024