Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 499, Issue 1, Pages L1-L4Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2010.01.129
Keywords
Lead-free ceramics; Dielectric properties; Piezoelectricity; Ferroelectricity
Categories
Funding
- National Science Foundation of China [50410179, 50772068]
Ask authors/readers for more resources
The BiScO3-modified (K0.475Na0.475Li0.05Nb0.95Sb0.05)O-3 lead-free piezoelectric ceramics were prepared using normal sintering technique. The effects of the BiScO3 on the phase structure and electrical properties of the ceramics were systematically studied. These results show that the BiScO3-modified (K0.475Na0.475Li0.04)(Nb0.95Sb0.05)O-3 lead-free piezoelectric ceramics form stable solution with tetragonal structure, and the Curie temperature and the polymorphic phase transition of the ceramics decreased with increasing x. Furthermore, the effect of the polarization temperature (T-p) on the piezoelectric properties of the ceramics was also discussed. These results show that the piezoelectric properties of the ceramics strongly depend on the T-p. The ceramics with x = 0.005 poled at 30 degrees C exhibit optimum piezoelectric properties (d(33) = 280 pC/N, k(p) = 49%, epsilon(r) = 1432, and tan delta = 3.7%). These results indicate that the ceramic is a promising candidate material for lead-free piezoelectric ceramics. (C) 2010 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available