OXIDE ION CONDUCTION IN THE SOLID-SOLUTION BASED ON THE SCHEELITE-TYPE OXIDE PBWO4

被引：76
|
作者：
ESAKA, T [1 ]
MINAAI, T [1 ]
IWAHARA, H [1 ]
机构：
[1] NAGOYA UNIV,FAC ENGN,CHIKUSA KU,NAGOYA,AICHI 464,JAPAN
来源：
SOLID STATE IONICS | 1992年 / 57卷 / 3-4期
关键词：
D O I：
10.1016/0167-2738(92)90165-L
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Electrical conduction in substituted scheelite-type oxides was studied by way of electrochemical method. Many substituted samples based on CaWO4, CaMoO4, BaWO4, etc. showed the mixed phase, where enhanced electrical conduction was not observed. High oxide ion conduction was observed in Pb1-xLaxWO4+x/2 or Pb1-xLa2x/3WO4 having the scheelite-type tetragonal structure. The maximum conductivity is 4.2 x 10(-2) S cm-1 at 800-degrees-C for Pb0.8La0.2WO4.1. The oxide ion conduction was considered to be due to the interstitial oxide ions formed by substitution of Pb2+ by La3+. These results are discussed in relation to the crystal phases.
引用
收藏
页码：319 / 325
页数：7
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