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- Title
Influences of Sintering Temperature on Piezoelectric, Dielectric and Ferroelectric Properties of Li/Ta-Codoped Lead-Free (Na,K)NbO<sub>3</sub> Ceramics.
- Authors
Pei Zhao; Bo-Ping Zhang; Jing-Feng Li
- Abstract
Li/Ta-codoped lead-free (Na,K)NbO3 ceramics with a nominal composition of [(Na0.535K0.480)0.942Li0.058](Nb0.90Ta0.10)O3 were synthesized normally at 1070°–1100°C. The XRD patterns of all samples show a single pervoskite structure with tetragonal symmetry. Although MPB separating the orthorhombic and tetragonal symmetries was absent, the maximum piezoelectric coefficient ( d33), electromechanical coupling coefficient ( kp), Curie temperature ( Tc), and remanent polarization ( Pr) were optimized as 216 pC/N, 38.1%, 445°C, and 8.73 μC/cm2, respectively.
- Subjects
SINTERING; IRON metallurgy; PIEZOELECTRICITY; DIELECTRICS; FERROELECTRICITY; CERAMICS; COUPLING constants; POLARIZATION (Electricity); CRYSTALLOGRAPHY
- Publication
Journal of the American Ceramic Society, 2008, Vol 91, Issue 5, p1690
- ISSN
0002-7820
- Publication type
Article
- DOI
10.1111/j.1551-2916.2008.02322.x