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Structural and Electrical Properties of Er2O3-Doped Na1/2Bi1/2TiO3 Lead-Free Piezoceramics.
- Source :
-
Journal of the American Ceramic Society . Nov2007, Vol. 90 Issue 11, p3642-3645. 4p. 1 Diagram, 1 Chart, 3 Graphs. - Publication Year :
- 2007
-
Abstract
- Sodium bismuth titanates Na1/2Bi1/2TiO3 (NBT) doped with 0–3 wt% Er2O3 were prepared by the conventional solid-state reaction method. The X-ray diffraction results revealed that the sintered Er-doped NBT ceramics exhibited a pure perovskite structure with Er3+ concentrations ranging from 0 to 1 wt%. At a low Er2O3 concentration, the Er-doped NBT ceramics showed enhanced electrical properties with dielectric constant ℇ33T/ℇ0=636, a low dielectric dissipation factor (tan δ=3.3%), a low coercive field ( Ec=4.56 kV/mm), and a high piezoelectric constant ( d33=75 pC/N). The relationship between the composition and properties of Er-doped NBT ceramics has been discussed. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00027820
- Volume :
- 90
- Issue :
- 11
- Database :
- Academic Search Index
- Journal :
- Journal of the American Ceramic Society
- Publication Type :
- Academic Journal
- Accession number :
- 27373320
- Full Text :
- https://doi.org/10.1111/j.1551-2916.2007.01918.x