| Effect of sintering in oxygen on electrical conduction and dielectric properties in CaCu3Ti4O12 | |
| Z. Yang; Y. Zhang; R. Xiong; J. Shi | |
| 2013 | |
| Source Publication | Materials Research Bulletin
 |
| ISSN | 0025-5408 |
| Volume | 48Issue:2Pages:310-314 |
| Abstract | 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. |
| description.department | [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 |
| Keyword | Ceramics Sol-gel Chemistry Impedance Spectroscopy Dielectric Properties Cu-stoichiometry Copper-titanate Ceramics Constant Atmosphere Evolution Behavior |
| URL | 查看原文 |
| Language | 英语 |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/71643 |
| Collection | 中国科学院金属研究所 |
| Recommended Citation 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. |
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