Effect of Rare-Earth Ionic Radius on Microstructure and Electrical Property of Rare-Earth Zirconate Ceramics

CORC > 青岛生物能源与过程研究所 > 中国科学院青岛生物能源与过程研究所 > 膜分离与催化团队

	Effect of Rare-Earth Ionic Radius on Microstructure and Electrical Property of Rare-Earth Zirconate Ceramics
	Xia Xiaoliang 1,2; Liu Zhanguo 1; Ouyang Jiahu 1; Jin Yujun 1
刊名	RARE METAL MATERIALS AND ENGINEERING
	2016-08-01
卷号	45 期号:8 页码:2003-2008
关键词	pyrochlore defective fluorite degree of structural order microstructure electrical conductivity
英文摘要	The microstructure and electrical conductivity of A(2)Zr(2)O(7) ceramic have been investigated by X-ray diffraction (XRD), high resolution transmission electron microscopy (HRTEM) coupled with selected area electron diffraction (SAED), Raman spectroscopy and Impedance spectroscopy. The results show that the degree of structural order of rare-earth zirconates A(2)Zr(2)O(7) ceramics gradually decreases with reducing ionic radius of rare-earth cations. The Sm2Zr2O7 and EuzZr(2)O(7) ceramics exhibit an ordered pyrochlore phase, while Gd2Zr2O7 and Dy2Zr2O7 ceramics have a disordered fluorite phase. Pyrochlore-type Eu2Zr2O7 ceramic with a relatively low structural order degree shows the maximum grain conductivity of 1.03 x 10(-2) S.cm(-1) at 1173 K, as compared with that of other rare-earth zirconates.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
研究领域[WOS]	Materials Science ; Metallurgy & Metallurgical Engineering
关键词[WOS]	STRUCTURAL TRANSFORMATION ; PYROCHLORE STRUCTURE ; RAMAN-SPECTROSCOPY ; FLUORITE STRUCTURE ; DISORDER ; A(2)B(2)O(7)
收录类别	SCI
语种	英语
WOS记录号	WOS:000382410400016
内容类型	期刊论文
源URL	[http://ir.qibebt.ac.cn/handle/337004/8426]
专题	青岛生物能源与过程研究所_膜分离与催化团队
作者单位	1.Harbin Inst Technol, Inst Adv Ceram, Harbin 150080, Peoples R China 2.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Peoples R China
推荐引用方式 GB/T 7714	Xia Xiaoliang,Liu Zhanguo,Ouyang Jiahu,et al. Effect of Rare-Earth Ionic Radius on Microstructure and Electrical Property of Rare-Earth Zirconate Ceramics[J]. RARE METAL MATERIALS AND ENGINEERING,2016,45(8):2003-2008.
APA	Xia Xiaoliang,Liu Zhanguo,Ouyang Jiahu,&Jin Yujun.(2016).Effect of Rare-Earth Ionic Radius on Microstructure and Electrical Property of Rare-Earth Zirconate Ceramics.RARE METAL MATERIALS AND ENGINEERING,45(8),2003-2008.
MLA	Xia Xiaoliang,et al."Effect of Rare-Earth Ionic Radius on Microstructure and Electrical Property of Rare-Earth Zirconate Ceramics".RARE METAL MATERIALS AND ENGINEERING 45.8(2016):2003-2008.