Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/25458
Title: (Bi0.5Na0.5)0.94Ba0.06TiO 3 lead-free ceramics with simultaneous addition of CeO2 and La2O3
Authors: Wang, XX
Chan, HLW 
Choy, CL 
Issue Date: 2005
Publisher: Springer
Source: Applied physics. A, Materials science & processing, 2005, v. 80, no. 2, p. 333-336 How to cite?
Journal: Applied physics. A, Materials science & processing 
Abstract: (Bi0.5Na0.5)0.94Ba0.06TiO 3 (BNBT-6) with simultaneous addition of 0.5 mol% CeO2 and 0.25, 0.5 and 0.75 mol% La2O3, respectively, was prepared by a conventional ceramic fabrication technique. An addition of 0.5 mol% CeO2 together with 0.5 mol% La2O3 enhanced the piezoelectric and dielectric constant of BNBT-6 ceramics significantly. At room temperature, this composition exhibits a high piezoelectric constant (d 33 = 162 × 10-12 C/N) and relatively low dielectric loss (tan δ = 2.0%) at 1 kHz. X-ray diffraction pattern shows that the coexistence of tetragonal and rhombohedral phases in the BNBT-6 composition was not changed by adding CeO2+La2O3, and they diffused into the BNBT lattice during sintering. SEM observation indicates that a small amount of CeO2+La2O3 almost does not affect the microstructure.
URI: http://hdl.handle.net/10397/25458
ISSN: 0947-8396
EISSN: 1432-0630
DOI: 10.1007/s00339-003-2210-9
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