Electromechanical properties of A-site (LiCe)-modified sodium bismuth titanate (Na{sub 0.5}Bi{sub 4.5}Ti{sub 4}O{sub 15}) piezoelectric ceramics at elevated temperature
- School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100 (China)
- Materials Research Institute, Pennsylvania State University, University Park, Pennsylvania 16802 (United States)
The Aurivillius-type bismuth layer-structured (NaBi){sub 0.46}(LiCe){sub 0.04}Bi{sub 4}Ti{sub 4}O{sub 15} (NBT-LiCe) piezoelectric ceramics were synthesized using conventional solid-state processing. Phase analysis was performed by x-ray diffraction and microstructural morphology was assessed by scanning electron microscopy. The dielectric, piezoelectric, ferroelectric, and electromechanical properties of NBT-LiCe ceramics were investigated. The piezoelectric activities were found to be significantly enhanced compared to NBT ceramics, which can be attributed to the lattice distortion and the presence of bismuth vacancies. The dielectric and electromechanical properties of NBT-LiCe ceramics at elevated temperature were investigated in detail. The excellent piezoelectric, dielectric, and electromechanical properties, coupled with high Curie temperature (T{sub c}=660 deg. C), demonstrated that the NBT-LiCe ceramics are the promising candidates for high temperature applications.
- OSTI ID:
- 21356147
- Journal Information:
- Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 9 Vol. 105; ISSN JAPIAU; ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ALKALI METAL COMPOUNDS
ALKALI METALS
BISMUTH
BISMUTH COMPOUNDS
CERAMICS
COHERENT SCATTERING
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
CRYSTALS
CURIE POINT
DIELECTRIC MATERIALS
DIFFRACTION
ELECTRICITY
ELECTRON MICROSCOPY
ELEMENTS
FERROELECTRIC MATERIALS
HYSTERESIS
LAYERS
MATERIALS
METALS
MICROSCOPY
MICROSTRUCTURE
MORPHOLOGY
OXYGEN COMPOUNDS
PHASE STUDIES
PHYSICAL PROPERTIES
PIEZOELECTRICITY
POINT DEFECTS
POLARIZATION
SCANNING ELECTRON MICROSCOPY
SCATTERING
SODIUM
SODIUM COMPOUNDS
THERMODYNAMIC PROPERTIES
TITANATES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
VACANCIES
X-RAY DIFFRACTION