Electrical conductivity of Nd1−xCaxSc1−yMgyO3 perovskite-type oxides

被引：0
作者：
Hisashi Kato
Hiroo Yugami
机构：
[1] Tohoku Electric Power Co.,Graduate School of Engineering
[2] Inc.,undefined
[3] Tohoku University,undefined
来源：
Journal of Electroceramics | 2007年 / 18卷
关键词：
Electrical conductivity; Perovskite; Scandium oxide; Proton conduction;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The electrical conductivities of Nd1−xCaxSc1−yMgyO3 were measured in the temperature range from 673 to 1273 K under both wet and dry conditions. The optimum Ca2+ doping concentration to the Nd3+ site in NdScO3 was found to be the range from 5 to 10%. Hole conduction was predominant under dry and highly oxidized conditions of P(O2) > 10−2 kPa in the temperature range from 973 to 1273 K, and proton conduction was predominant under wet and reduced conditions in the temperature range from 673 to 973 K. Oxide ion conduction was predominant under wet and reduced conditions in the temperature range from 1073 to 1273 K. The Mg2+ doping concentration limit for the Sc3+ site to hold a single crystal phase was 2%, and this doping enhanced hole conduction.
引用
收藏
页码：219 / 224
页数：5
相关论文
共 64 条
  • [1] Singhal S.C.(2002)undefined Solid State Ion. 152–153 405-undefined
  • [2] Dokiya M.(2002)undefined Solid State Ion. 152–153 383-undefined
  • [3] Tietz F.(2002)undefined Solid State Ion. 152–153 373-undefined
  • [4] Buchkremer H.-P.(2000)undefined Solid State Ion. 129 95-undefined
  • [5] Stover D.(1994)undefined J. Am. Chem. Soc. 116 3801-undefined
  • [6] Steele B.C.H.(1995)undefined Solid State Ion. 79 147-undefined
  • [7] Ishihara T.(1996)undefined Solid State Ion. 86–88 197-undefined
  • [8] Matsuda H.(1982)undefined Solid State Ion. 6 237-undefined
  • [9] Takita Y.(1991)undefined Solid State Ion. 45 311-undefined
  • [10] Ishihara T.(1999)undefined Solid State Ion. 122 1-undefined
1234567