Abnormal dielectric behaviors in Mn-doped CaCu3Ti4O12 ceramics and their response mechanism
文献类型：期刊论文
| 作者 | Lin, YH; Deng, W; Xu W(徐伟); Xu, W; Liu, Y; Chen, DL; Zhang, XL; Nan, CW; Chen DL(陈栋梁); Zhang XL(张晓丽) |
| 刊名 | MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
 |
| 出版日期 | 2012 |
| 卷号 | 177期号:20页码:1773-1776 |
| 关键词 | CaCu3Ti4O12 High dielectric Activation energy |
| 英文摘要 | Mn-doped CaCu3Ti4O12 (CCTO) polycrystalline ceramics have been prepared by the conventional solid state sintering. Our results indicate that 10% Mn doping can decrease the dielectric permittivity in CaCu3Ti4O12 by about 2 orders of magnitude (from 10(4) to 10(2)). The grain and grain boundary activation energies show an obvious increase from 0.054 eV to 0.256 eV, and decrease from 0.724 eV to 0.258 eV with increasing the Mn doping concentration, respectively, which may be caused by the variation of Cu and Ti valence states in the CCTO samples evidenced by the X-ray absorption spectra. The similar grain and grain boundary activation energies result in invalidation of the internal boundary layer capacitance effect for the 10% Mn-doped CCTO sample, and thus result in the dramatic decrease of dielectric permittivity. (C) 2012 Elsevier B.V. All rights reserved. |
| 学科主题 | Materials Science; Physics |
| 收录类别 | SCI |
| WOS记录号 | WOS:000311926900008 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/224169]  |
| 专题 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Lin, YH,Deng, W,Xu W,et al. Abnormal dielectric behaviors in Mn-doped CaCu3Ti4O12 ceramics and their response mechanism[J]. MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS,2012,177(20):1773-1776. |
| APA | Lin, YH.,Deng, W.,徐伟.,Xu, W.,Liu, Y.,...&张晓丽.(2012).Abnormal dielectric behaviors in Mn-doped CaCu3Ti4O12 ceramics and their response mechanism.MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS,177(20),1773-1776. |
| MLA | Lin, YH,et al."Abnormal dielectric behaviors in Mn-doped CaCu3Ti4O12 ceramics and their response mechanism".MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS 177.20(2012):1773-1776. |
入库方式： OAI收割
来源：高能物理研究所
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