Microstructural studies of nanocrystalline barium zirconium titanate (BZT) for piezoelectric applications

Journal Article · Fri Sep 25 04:00:00 EDT 2015 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4931265· OSTI ID:22488975

Izzuddin, Izura; Zainuddin, Zalita

Lead-free piezoelectric ceramics based on barium titanate (BaTiO{sub 3}) with substitution of Zr{sup 4+} were prepared using sol-gel method. The Ba(Zr{sub x}Ti{sub 1-x})O{sub 3}, (BZT) powders with x = 0.0, 0.1, 0.2 and 0.3 were pressed into pellets and sintered at 1250 °C for 2 h. Focusing on the effect of Zr{sup 4+} substitutions into BaTiO{sub 3} perovskite system, the phase transition and microstructural properties of BZT ceramics were studied using XRD, SEM and EDX spectroscopy. All X-ray diffractograms were fitted using Pawley refinement model. The XRD diffractograms revealed the progressive phase transition from tetragonal to cubic phase as Zr content increased. The crystallite exhibited decreasing trend and was supported by shrinkage in grain size. The EDX analysis confirmed the successful substitution of Ti{sup 4+} with Zr{sup 4+} in BaTiO3 crystal.

• OSTI ID: 22488975
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1678; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
BARIUM COMPOUNDS
CERAMICS
CRYSTALS
GRAIN SIZE
NANOSTRUCTURES
PEROVSKITE
PHASE TRANSFORMATIONS
PIEZOELECTRICITY
POWDERS
SCANNING ELECTRON MICROSCOPY
SOL-GEL PROCESS
TITANATES
TITANIUM IONS
X-RAY DIFFRACTION
X-RAY SPECTROSCOPY
ZIRCONIUM COMPOUNDS
ZIRCONIUM IONS