Conductivity studies on oxygen-deficient Ruddlesden-Popper phases

被引：19
|
作者：
Navas, C [1 ]
zurLoye, HC [1 ]
机构：
[1] MIT,DEPT CHEM,CAMBRIDGE,MA 01239
来源：
SOLID STATE IONICS | 1996年 / 93卷 / 1-2期
关键词：
Ruddlesden-Popper; oxide; ionic conductivity;
D O I：
10.1016/S0167-2738(96)00515-2
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：
A new series of doped-Ruddlesden-Popper phases, of general formula Sr(3)M(2-x)M(x)'O-7-y (M = Ti, Zr, M' = Al, Ga, In) were synthesized and their conductivity was investigated as a function of temperature and oxygen partial pressure. The highest total conductivity in air is 1.6 x 10(-3) S/cm at 950 degrees C for both Sr3Ti1.75Ga0.25O6.875 and Sr3Ti1.9In0.1O6.95. Measurements of the conductivity as a function of oxygen partial pressure indicate that p-type electronic conductivity predominates at high p(O-2), while a p(O-2)-independent region at intermediate p(O-2) values indicates ionic conductivity. The magnitude of the ionic conductivity at 700 degrees C is approximately 10(-5) S/cm.
引用
收藏
页码：171 / 176
页数：6
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