Phase transition and piezoelectric property of (Bi{sub 0.5}Na{sub 0.5}){sub 0.94}Ba{sub 0.06}Zr{sub y}Ti{sub 1-y}O{sub 3}(y=0-0.04) ceramics

Journal Article · Thu Nov 01 00:00:00 EDT 2007 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.2803725· OSTI ID:21064431

Yao, Y -Q; Tseng, T -Y; Chou, C -C; Chen, H H.D. ^[1]

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1. Department of Materials and Mineral Resources Engineering, National Taipei University of Technology, Taipei, 106 Taiwan (China)

The ceramics with the composition of (Bi{sub 0.5}Na{sub 0.5}){sub 0.94}Ba{sub 0.06}Zr{sub y}Ti{sub 1-y}O{sub 3} (BNBZ100yT, in which y=0,0.01,0.02,0.04) were prepared successfully by the solid state reaction method. X-ray diffraction studies revealed the perovskite structure in BNBZ100yT ceramics sintered at 1170 deg. C for 2 h in air. The relative densities of the sintered ceramics were around 97%-99%. The temperature dependent dielectric properties of BNB6T and BNB6Z4T ceramics showed their relaxor-like behaviors. Decreases in remnant polarization, coercive field, and disappearance of piezoelectric properties were found by the substitution of 2 and 4 mol % Zr{sup 4+} for Ti{sup 4}+ in these ceramics. Electron diffraction patterns taken in a transmission electron microscope demonstrated the existence of cubic crystalline phase in the BNB6Z4T ceramics leading to the disappearance of piezoelectric property. Decrease in grain size was also observed with the substitution of Zr{sup 4+} for Ti{sup 4+} in BNB6T ceramics.

• OSTI ID: 21064431
• Journal Information: Journal of Applied Physics, Vol. 102, Issue 9; Other Information: DOI: 10.1063/1.2803725; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AIR
BARIUM COMPOUNDS
BISMUTH COMPOUNDS
CERAMICS
DIELECTRIC PROPERTIES
ELECTRON DIFFRACTION
FERROELECTRIC MATERIALS
GRAIN SIZE
PHASE TRANSFORMATIONS
PIEZOELECTRICITY
SINTERING
SODIUM COMPOUNDS
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 1000-4000 K
TITANATES
TITANIUM IONS
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
ZIRCONATES
ZIRCONIUM IONS