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Electric field induced polarization and strain of Bi-based ceramic composites.
- Source :
-
Journal of Applied Physics . 12/15/2012, Vol. 112 Issue 12, p124109. 11p. 1 Black and White Photograph, 1 Diagram, 3 Charts, 8 Graphs. - Publication Year :
- 2012
-
Abstract
- The ferroelectric properties and strain behaviors of 0-3-type-ceramic composites were investigated. (100-x)Bi0.5(Na0.75K0.25)TiO3-xBiAlO3 (x = 5, 6, and 7: abbreviated as 95BNKT-5BA, 94BNKT-6BA, and 93BNKT-7BA, respectively, and the three compositions are altogether designated as BNKT-BA) were chosen as a matrix materials, and ferroelectric Bi0.5Na0.5TiO3 (f-BNT), Bi0.5(Na0.8K0.2)0.5TiO3 (f-BNKT), and 98.5Bi0.5(Na0.8K0.2)0.5TiO3-1.5BiAlO3 (f-BNKTBA) grains as inclusions. Large f-BNT, f-BNKT, and f-BNKTBA grains strongly affect the ferroelectric properties and strain behaviors of the BNKT-BA matrix in the composite. In 95BNKT-5BA with f-BNT and f-BNKT, negative strain was observed, indicating that the ferroelectric phase is formed and stabilized. 93BNKT-7BA with f-BNT, f-BNKT and f-BNKTBA showed an increase in positive strain, which is associated with low field-induced phase transition. It was found from the strain curve that two contributions, ferroelectric phase stabilization and phase transition activation, were involved in the strain behaviors of the ceramic composites. [ABSTRACT FROM AUTHOR]
- Subjects :
- *FERROELECTRICITY
*COMPOSITE materials research
*CERAMICS
*FERROELECTRIC devices
Subjects
Details
- Language :
- English
- ISSN :
- 00218979
- Volume :
- 112
- Issue :
- 12
- Database :
- Academic Search Index
- Journal :
- Journal of Applied Physics
- Publication Type :
- Academic Journal
- Accession number :
- 84624074
- Full Text :
- https://doi.org/10.1063/1.4770372