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- Title
Electrical and oxygen sensing properties of NdBaCoO ceramics.
- Authors
Han, Ruqu; Dong, Songtao; Wang, Yuanxiang; Li, Xiaoxi; Zhang, Yamei
- Abstract
NdBaCoO (0 ≤ x ≤ 0.2) ceramics was synthesized by solid state reaction. All the samples have an orthorhombic perovskite structure (Space group P n m a). The electrical transport property indicates that Ba doped NdCoO ceramics goes through semiconductor-metal phase transition. The electrical resistivity of NdBaCoO (0 ≤ x ≤ 0.15) ceramics decreases, while the electrical resistivity of NdBaCoO ceramics increases with the increase of temperature. The chemical-sensing property shows that NdBaCoO ceramics is very sensitive to oxygen. Also, increasing Ba doping concentration can reduce the oxygen desorption rate and increase the sensitivity of resistivity. These results indicate that Ba doped NdCoO ceramics is not only the good candidate of the cathode materials of solid fuel cells but also the good materials of gas sensor devices.
- Subjects
CERAMIC materials; NEODYMIUM compounds; BARIUM oxide; COBALT oxides; OXYGEN detectors; ELECTRIC conductivity; ELECTRICAL resistivity
- Publication
Journal of Materials Science: Materials in Electronics, 2017, Vol 28, Issue 19, p14234
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-017-7281-z