INFLUENCE OF CE SUBSTITUTION FOR ZR ON ELECTRICAL PROPERTY OF FLUORITE-TYPE Gd2Zr2O7
Gd2(Zr1-xCex)2O7 (0≤x≤0.3) ceramics are prepared via the solid-state reaction process at 1973 K for 10 h in air. Gd2(Zr1-xCex)2O7 ceramics exhibit a defective fluorite-type structure. The electrical property of Gd2(Zr1-xCex)2O7 ceramics is investigated by electrochemical impedance spectroscopy over a frequency range of 10 Hz to 8 MHz from 623 to 923 K. The activation energy and pre-exponential factor for grain conductivity increase with increasing cerium content. The electrical conductivity follows the Arrheniustype behavior, which increases with increasing temperature for any composition. The grain conductivity of Gd2(Zr1-xCex)2O7 ceramics changes with different cerium content, and gradually decreases with increasing cerium content at the same temperature level.
XIAOLIANG XIA SHUAI GAO ZHANGUO LIU SA LI JIAHU OUYANG
Institute for Advanced Ceramics, Department of Materials Science, Harbin Institute of Technology, Harbin 150001, China
国际会议
The 12th Asian Conference on Solid State Ionics(第十二届亚洲固态离子学会议暨第十五届中国固态离子学会议)
武汉
英文
227-233
2010-05-02（万方平台首次上网日期，不代表论文的发表时间）