Abstract
Lead-free (K 0.5Na 0.5)(Nb 0.7Ta 0.3)O 3 piezoelectric material was successfully synthesized via a sol-gel process. Crystalline (K 0.5Na 0.5)(Nb 0.7Ta 0.3)O 3 nanopowders were obtained after heat treatment at 700 °C. The particle size was estimated to be 87nm±23 nm. The transmission electron microscopy images showed that individual nanoparticles were single crystalline and had a pseudo-cubic structure with a lattice parameter of ∼3.96 Å. Both X-ray diffraction and scanning electron microscopy studies consistently showed that the crystallization of the (K 0.5Na 0.5)(Nb 0.7Ta 0.3)O 3 occurred slightly above 500 °C. The samples have an appropriate stoichiometry as found via energy dispersive X-ray spectroscopy. The demonstration of the synthesis of (K 0.5Na 0.5)(Nb 0.7Ta 0.3)O 3 via a sol-gel process as presented in this paper can provide an important foundation for the development of a synthetic route towards (K 0.5Na 0.5) (Nb 0.7Ta 0.3)O 3 doped with various other elements for high performance piezoelectric devices.
Original language | English |
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Pages (from-to) | 3555-3558 |
Number of pages | 4 |
Journal | Journal of Nanoscience and Nanotechnology |
Volume | 12 |
Issue number | 4 |
DOIs | |
Publication status | Published - 2012 |
Keywords
- Lead-free
- Nanopowder
- Piezoelectric
- Sol-gel process
ASJC Scopus subject areas
- Bioengineering
- General Chemistry
- Biomedical Engineering
- General Materials Science
- Condensed Matter Physics