Characteristics and sensing properties of La0.8Pb0.2Fe1-xNixO3 system for CO gas sensors

被引：23
|
作者：
Song, Peng [1 ]
Qin, Hongwei
Huang, Shanxing
Liu, Xing
Zhang, Rui
Hu, Jifan
Jiang, Minhua
机构：
[1] Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Peoples R China
[2] Shandong Univ, Dept Phys & Microelect, Jinan 250100, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY | 2007年 / 138卷 / 02期
关键词：
perovskite; citric method; Ni-doping; CO sensing;
D O I：
10.1016/j.mseb.2006.11.022
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Nanocrystalline powders of La0.8Pb0.2Fe1-xNixO3 were prepared by a citric method. The structure, electrical and carbon monoxide (CO) gas-sensing properties were investigated. X-ray diffraction patterns showed that the La0.8Pb0.2Fe1-xNixO3 system formed a single phase only when the amount of Ni was lower than x = 0.4. With increasing the Ni amount, the concentration of holes increased, resulting in a decrease in resistance. La0.8Pb0.2Fe0.8Ni0.2O3 showed the highest response to CO, and its electrical resistance was shown to be an exponential function of CO concentration. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：193 / 197
页数：5
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