Oxygen pressure dependence of the ionic conductivity of iron-doped calcium titanate
作者: C. SallesJ.M. BassatJ. FouletierD. MarinhaM.-C. Steil
作者单位: 1LSFC Laboratoire de synthèse et fonctionnalisation des céramiques, UMR 3080 CNRS/Saint-Gobain CREE, F-84300 Cavaillon, France
2CNRS, Université de Bordeaux, ICMCB, 87 avenue du Dr. A. Schweitzer, 33608 Pessac, France
3Univ. Grenoble Alpes, CNRS, Grenoble INP*, LEPMI, 38000 Grenoble, France
4Univ. Savoie Mont Blanc, France
5Institute of Engineering, Univ. Grenoble Alpes, France
刊名: Solid State Ionics, 2018, Vol.324 , pp.103-108
来源数据库: Elsevier Journal
DOI: 10.1016/j.ssi.2018.06.014
关键词: Ionic conductivityCalcium titanatesCaTi 1−x Fe x O 3−δImpedance spectroscopyOxygen isotopic exchange
英文摘要: Abstract(#br)The ionic conductivity of CaTi 0.9 Fe 0.1 O 3−δ was determined as functions of oxygen partial pressure and temperature, using two experimental methods: total electrical conductivity measurements by impedance spectroscopy and oxygen isotopic exchange. The data were compared with previously published results. It was demonstrated that, in contradiction with the hypothesis often assumed, the ionic conductivity is not constant in the whole oxygen pressure range. The variation of the ionic conductivity as a function of the oxygen pressure, in the domain where an additional p-type electronic conductivity is observed, was calculated for CaTi 0.9 Fe 0.1 O 3−δ using our results, and for CaTi 0.8 Fe 0.2 O 3−δ using data from the literature. At 900 °C, under air, a decrease of the ionic...
全文获取路径: Elsevier  (合作)
影响因子:2.046 (2012)

  • conductivity 传导率
  • dependence 从属
  • titanate 钛酸盐
  • ionic 离子的
  • doped 掺杂(了)的掺了添加剂的
  • Oxygen 氧气
  • isotopic 同位素置换
  • pressure 压力
  • exchange 交换
  • spectroscopy 分光学