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- Title
Electrical conductivity and chemical stability of BaCeAGdO (A = In, Zr, Ta; x = 0, 0·1) ceramics.
- Authors
LIU, XIAO-MING; GU, YI-JING; LIU, ZHAN-GUO; OUYANG, JIA-HU; YAN, FU-YAO YAN; XIANG, JUN
- Abstract
BaCeAGdO (A = In, Zr, Ta; x = 0, 0·1) ceramics were synthesized by solid-state reaction method. Microstructure and electrical properties of BaCeAGdO ceramics were investigated by means of X-ray diffraction (XRD), scanning electron microscopy (SEM) and complex impedance analysis at intermediate temperatures of 573-1073 K in different atmospheres. BaCeGdO, BaCeInGdO and BaCeZrGdO ceramics exhibit a single cubic perovskite structure. BaCeInGdO ceramic has the highest conductivity of 4·6 × 10 S·cm in air at 1073 K. BaCeInGdO and BaCeZrGdO ceramics exhibit an excellent chemical stability against boiling water. Indium is a suitable doping element to promote the sintering densification and to enhance both electrical conductivity and chemical stability of Gd-doped BaCeO at operating temperatures.
- Subjects
CHEMICAL stability; CERAMIC materials synthesis; BARIUM compounds; ELECTRIC conductivity; ZIRCONIUM compounds; SOLID state chemistry; SUPERIONIC conductors; IMPEDANCE spectroscopy
- Publication
Bulletin of Materials Science, 2013, Vol 36, Issue 3, p395
- ISSN
0250-4707
- Publication type
Article
- DOI
10.1007/s12034-013-0485-9