Synthesis of lead-free (K, Na)(Nb, Ta)O 3 nanopowders using a sol-gel process

Dodla Rajesh, Seung Wook Kim, Jinhoo Jeong, Sahn Nahm, Woong Kim

Research output: Contribution to journalArticle

2 Citations (Scopus)

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 languageEnglish
Pages (from-to)3555-3558
Number of pages4
JournalJournal of Nanoscience and Nanotechnology
Volume12
Issue number4
DOIs
Publication statusPublished - 2012 Jul 6

Fingerprint

Polymethyl Methacrylate
sol-gel processes
Sol-gel process
Lead
Gels
Piezoelectric devices
X-Ray Emission Spectrometry
Crystalline materials
Piezoelectric materials
synthesis
Crystallization
Transmission Electron Microscopy
Particle Size
X-Ray Diffraction
Stoichiometry
Electron Scanning Microscopy
Nanoparticles
Lattice constants
stoichiometry
lattice parameters

Keywords

  • Lead-free
  • Nanopowder
  • Piezoelectric
  • Sol-gel process

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Chemistry(all)
  • Materials Science(all)
  • Bioengineering
  • Biomedical Engineering

Cite this

Synthesis of lead-free (K, Na)(Nb, Ta)O 3 nanopowders using a sol-gel process. / Rajesh, Dodla; Kim, Seung Wook; Jeong, Jinhoo; Nahm, Sahn; Kim, Woong.

In: Journal of Nanoscience and Nanotechnology, Vol. 12, No. 4, 06.07.2012, p. 3555-3558.

Research output: Contribution to journalArticle

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