Varistor effect of WO3-based ceramics at high temperatures
文献类型：期刊论文
| 作者 | Y. Wang ; X. S. Yang ; Z. L. Liu ; K. L. Yao |
| 刊名 | Materials Letters
 |
| 出版日期 | 2004 |
| 卷号 | 58期号:6页码:1017-1019 |
| 关键词 | varistor effect ceramics current-voltage properties oxide |
| ISSN号 | 0167-577X |
| 中文摘要 | Tb4O7-doped WO3 ceramics were fabricated with conventional ceramic technique and current-voltage properties were measured from room temperature to 500degreesC. The sample, with atom ratio of W to Tb equal to 95/5, exhibits nonlinear I-V property characterized with symmetry and smooth below 100degreesC. With temperature increasing, nonlinearity of the samples decreases, but, beyond 300degreesC, the varistor effect of the sample reappears to some extent and the nonlinear coefficient alpha is around 4 at 500degreesC in the current density range of 10(-3) to 10(-2) A/cm(2). The coexistence of two phases in Tb-WO3 ceramics was observed by means of XRD at high temperature, and net polarization from two different phases at grain boundaries was related to electrical nonlinearity. (C) 2003 Elsevier B.V. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/35596]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | Y. Wang,X. S. Yang,Z. L. Liu,et al. Varistor effect of WO3-based ceramics at high temperatures[J]. Materials Letters,2004,58(6):1017-1019. |
| APA | Y. Wang,X. S. Yang,Z. L. Liu,&K. L. Yao.(2004).Varistor effect of WO3-based ceramics at high temperatures.Materials Letters,58(6),1017-1019. |
| MLA | Y. Wang,et al."Varistor effect of WO3-based ceramics at high temperatures".Materials Letters 58.6(2004):1017-1019. |
入库方式： OAI收割
来源：金属研究所
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