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Enhancement in the microstructure and the strain properties of Bi1/2(Na,K)1/2TiO3-based lead-free ceramics by Li substitution
- Source :
- Journal of the Korean Physical Society; September 2012, Vol. 61 Issue: 6 p895-898, 4p
- Publication Year :
- 2012
-
Abstract
- Abstract: The effects of Li substitution on the crystal structure and the strain properties of Bi<subscript>0.5</subscript>-(Na<subscript>0.82</subscript>K<subscript>0.18</subscript>)<subscript>0.5</subscript>(Ti<subscript>0.95</subscript>Sn<subscript>0.05</subscript>)O<subscript>3</subscript> ceramics have been investigated. Li substitution enhanced the grain growth and densification, as well as the electric-field-induced strain (EFIS). Without Li substitution, the EFIS was 0.31% under a dc field of 6 kV/mm. However, the EFIS was enhanced to 0.39% when 4 mol% Na was replaced with Li, resulting in a normalized strain (S <subscript> max </subscript>/E <subscript> max </subscript>) of 646 pm/V. The enhanced strain could be attributed to the increased flexibility in the lattice caused by simultaneous substitutions with both A-site Li ions and B-site Sn ions.
Details
- Language :
- English
- ISSN :
- 03744884 and 19768524
- Volume :
- 61
- Issue :
- 6
- Database :
- Supplemental Index
- Journal :
- Journal of the Korean Physical Society
- Publication Type :
- Periodical
- Accession number :
- ejs28304190
- Full Text :
- https://doi.org/10.3938/jkps.61.895