Electrochemistry
Online ISSN : 2186-2451
Print ISSN : 1344-3542
ISSN-L : 1344-3542
報文
Doping Effect of Sr2+ on Electrical Conductivity in La1−xSrxSc1−yAlyO3 Perovskite-type Oxides
Hisashi KATOHiroo YUGAMI
著者情報
ジャーナル フリー

2008 年 76 巻 5 号 p. 334-337

詳細
抄録

The total electrical conductivities of Sr2+ and Al3+-doped LaScO3 materials, La1−xSrxSc1−yAlyO3 (x=0.1–0.325, y=0–0.01), were examined under wet, dry, reduced and oxidized conditions and were found to express mixed ionic and electronic conductivities. In the high temperature range of 1073 to 1273 K, oxide-ion conduction was predominant. In the systematic measurement of electrical conductivity, we found that the oxide-ion conductivities and activation energies show continuous changes over a wide range of Sr2+ dopant concentrations. We also found that oxide-ion conduction was enhanced by Sr2+ doping to the La3+ site. The ionic transference number, tion, calculated from the conductivity data under high and low P (O2) conditions was 0.73 (x=0.325, y=0.01) at 1273 K.

著者関連情報
© 2008 The Electrochemical Society of Japan
前の記事 次の記事
feedback
Top