Oxide-ion conductivity of the oxygen deficient perovskite solid-solution system, (Ba0.5-xSrxLa0.5)2(In1-yMy)2O5.5 (M=Y or Ga) |
| |
| Authors: | Kakinuma K Yamamura H Atake T |
| |
| Institution: | (1) Department of Applied Chemistry, Faculty of Engineering, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama 221-8686, Japan;(2) Materials and Structures Laboratory, Tokyo Institute of Technology Materials and Structures Laboratory, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan |
| |
| Abstract: | In order to elucidate the mechanism of oxide-ion conductivity for (Ba0.5-xSrxLa0.5)(In1-yMy)2O5.5 (M=Y or Ga, 0<x<0.2, 0<y<0.2) solid-solution system, the electrical conductivity was measured as a function of oxygen partial pressure and temperature,
and the results were investigated in terms of a dopant content and unit cell free volume. The system was confirmed to be an
oxide-ion conductor from the oxygen partial pressure dependence on electrical conductivity. The oxide-ion conductivity increased
with increasing the unit cell free volume at first. However, it showed a maximum at a value of free volume, and then decreased.
The decreasing conductivity vs. the volume would be related to the crystal symmetry change.
This revised version was published online in August 2006 with corrections to the Cover Date. |
| |
| Keywords: | unit cell free volume perovskite structure crystal symmetry oxide-ion conductivity |
| 本文献已被 SpringerLink 等数据库收录！ |
|
