Effect of sintering in oxygen on electrical conduction and dielectric properties in CaCu3Ti4O12

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	Effect of sintering in oxygen on electrical conduction and dielectric properties in CaCu3Ti4O12
	Z. Yang; Y. Zhang; R. Xiong; J. Shi
	2013
发表期刊	Materials Research Bulletin
ISSN	0025-5408
卷号	48 期号:2 页码:310-314
摘要	CaCu3Ti4O12 (CCTO) ceramics were sintered in air and in oxygen, and the oxygen pressures are 1 atm and 3 atm, respectively. The results of dc electrical conduction and dielectric measurement show that for the CCTO ceramics sintered in oxygen, leakage, grain conductivity and the low-frequency dielectric constant are greatly reduced; these changes of electrical properties may be attributed to the enhancement of activation energies for electrical conduction in grain. In addition, for the CCTO ceramics sintered in oxygen, in the spectra of dielectric loss the strong peaks appear in the low-frequency range, which may be attributed to the contact-electrode effect on ceramic surface. (c) 2012 Elsevier Ltd. All rights reserved.
部门归属	[yang, zhi ; xiong, rui ; shi, jing] wuhan univ, minist educ, key lab artificial micro & nanostruct, wuhan 430072, peoples r china. [yang, zhi ; xiong, rui ; shi, jing] wuhan univ, sch phys & technol, wuhan 430072, peoples r china. [zhang, yue] huazhong univ sci & technol, dept opt & elect informat, wuhan 430074, peoples r china. [xiong, rui ; shi, jing] hubei univ, minist educ, key lab green preparat & applicat funct mat, wuhan 430062, peoples r china. [shi, jing] acad sinica, int ctr mat phys, shenyang 110015, peoples r china. ; zhang, y (reprint author), huazhong univ sci & technol, dept opt & elect informat, wuhan 430074, peoples r china. ; yue-zhang@hust.edu.cn ; xiongrui1967@163.com
关键词	Ceramics Sol-gel Chemistry Impedance Spectroscopy Dielectric Properties Cu-stoichiometry Copper-titanate Ceramics Constant Atmosphere Evolution Behavior
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/71643
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. Yang,Y. Zhang,R. Xiong,et al. Effect of sintering in oxygen on electrical conduction and dielectric properties in CaCu3Ti4O12[J]. Materials Research Bulletin,2013,48(2):310-314.
APA	Z. Yang,Y. Zhang,R. Xiong,&J. Shi.(2013).Effect of sintering in oxygen on electrical conduction and dielectric properties in CaCu3Ti4O12.Materials Research Bulletin,48(2),310-314.
MLA	Z. Yang,et al."Effect of sintering in oxygen on electrical conduction and dielectric properties in CaCu3Ti4O12".Materials Research Bulletin 48.2(2013):310-314.