High-pressure synthesis and properties of CeO2-ZrO2 solid solution

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	High-pressure synthesis and properties of CeO2-ZrO2 solid solution
	D. P. Xu; Q. Y. Wang; Z. Lu; Z. G. Liu; G. M. Zhang; W. H. Su
	2001
发表期刊	Chinese Science Bulletin
ISSN	1001-6538
卷号	46 期号:10 页码:801-806
摘要	Using nanoparticles of CeO2 and ZrO2 prepared by the chemical precipitation method as starting materials, the single-phase cubic Ce0.5Zr0.5O2 solid solution (c-Ce0.5Zr0.5O2) has been synthesized under 3.1 GPa at 1073 K for the first time. The structure of the c-Ce0.5Zr0.5O2 has not been changed before and after annealing at 773 K for 1 h. Only an unknown EPR signal (g = 1.990) has been observed in the c-Ce0.5Zr0.5O2 and not varied after annealing at 773 K for 1 h, which exhibited that there exists no Ce3+ in the c-Ce0.5Zr0.5O2 and the Ce4+ has not been reduced into Ce3+ after annealing. The transport mechanism is ionic for the c-Ce0.5Zr0.5O2. The bulk conductivity (sigma =1.2 x 10(-5) S/cm at 823 K, sigma = 2.1 x 10(-3) S/cm at 1123 K) is the same as that of CeO2, but smaller than that of Y2O3-stabilized ZrO2. A marked curvature at T = 823 K has been observed in the Arrhenius plot of the bulk conductivity. The activation energy below 823 K is lower than that above 823 K, and the reason has been discussed.
部门归属	jilin univ, dept phys, changchun 130023, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110015, peoples r china. china ctr adv sci & technol, world lab, ctr condensed matter & radiat phys, beijing 100080, peoples r china.;xu, dp (reprint author), jilin univ, dept phys, changchun 130023, peoples r china
关键词	Ceo2-zro2 Nanocrystalline High Pressure And -temperature Solid-state Reaction Solid Solution Hydrothermal Synthesis Electrical-properties Nanocrystalline Stability System
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WOS记录号	WOS:000169045500003
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/36853
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	D. P. Xu,Q. Y. Wang,Z. Lu,et al. High-pressure synthesis and properties of CeO2-ZrO2 solid solution[J]. Chinese Science Bulletin,2001,46(10):801-806.
APA	D. P. Xu,Q. Y. Wang,Z. Lu,Z. G. Liu,G. M. Zhang,&W. H. Su.(2001).High-pressure synthesis and properties of CeO2-ZrO2 solid solution.Chinese Science Bulletin,46(10),801-806.
MLA	D. P. Xu,et al."High-pressure synthesis and properties of CeO2-ZrO2 solid solution".Chinese Science Bulletin 46.10(2001):801-806.