Origin of high dielectric performance in fine grain-sized CaCu3Ti4O12 materials
文献类型：期刊论文
| 作者 | Lin, H; Xu, WT; Zhang, HT; Chen, C; Zhou, YF; Yi, ZG |
| 刊名 | JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
 |
| 出版日期 | 2020-05-01 |
| 期号 | 54页码:1957 |
| ISSN号 | 0955-2219 |
| DOI | 10.1016/j.jeurceramsoc.2019.12.042 |
| 文献子类 | Article |
| 英文摘要 | We report on high dielectric constant (8.3 x 10(3), 10(4) Hz), low dielectric loss (0.029, 10(4) Hz)as well as fine grain size (similar to 840 nm) achieved in pure CaCu3Ti4O12 (CCTO) ceramics through a combination of sol-gel method, spark plasma sintering and annealing process. By adjusting the sintering temperature and annealing conditions, the composition variations, valence states and microstructures of CCTO ceramics are systematically studied, which provide direct clues in understanding the origin of their excellent dielectric response. Through the studies on the dielectric, impedance, modulus and conductivity properties of CCTO ceramics, a modified brick-layer model based on two interfacial polarizations originating from sub-grain boundary and grain boundary barriers is proposed to explain their dielectric behaviors. The high dielectric constant of CCTO ceramics is mainly dominated by the sub-grain contribution; and the reduced dielectric loss is attributed to the decreases of electrical conductivity and relaxation loss. |
| WOS关键词 | CURRENT-VOLTAGE BEHAVIOR ; ELECTRICAL-PROPERTIES ; MICROSTRUCTURE EVOLUTION ; DOPED CACU3TI4O12 ; CERAMICS ; CONSTANT ; PERMITTIVITY ; CONDUCTION ; STABILITY ; OXYGEN |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://ir.sic.ac.cn/handle/331005/28105]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 推荐引用方式 GB/T 7714 | Lin, H,Xu, WT,Zhang, HT,et al. Origin of high dielectric performance in fine grain-sized CaCu3Ti4O12 materials[J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,2020(54):1957. |
| APA | Lin, H,Xu, WT,Zhang, HT,Chen, C,Zhou, YF,&Yi, ZG.(2020).Origin of high dielectric performance in fine grain-sized CaCu3Ti4O12 materials.JOURNAL OF THE EUROPEAN CERAMIC SOCIETY(54),1957. |
| MLA | Lin, H,et al."Origin of high dielectric performance in fine grain-sized CaCu3Ti4O12 materials".JOURNAL OF THE EUROPEAN CERAMIC SOCIETY .54(2020):1957. |
入库方式： OAI收割
来源：上海硅酸盐研究所
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