Investigation of phase composition and microwave dielectric properties of MgO-Ta2O5 ceramics with ultrahigh Qf value
文献类型：期刊论文
| 作者 | Dang, Mingzhao1; Ren, Haishen1; Yao, Xiaogang; Peng, Haiyi1; Xie, Tianyi2; Lin, Huixing; Luo, Lan |
| 刊名 | JOURNAL OF THE AMERICAN CERAMIC SOCIETY
 |
| 出版日期 | 2018 |
| 卷号 | 101期号:7页码:3026 |
| 关键词 | MgO-Ta2O5 ceramics microwave dielectric properties ultrahigh-quality factor |
| ISSN号 | 0002-7820 |
| DOI | 10.1111/jace.15434 |
| 英文摘要 | Four MgO-Ta2O5 ceramics with the MgO/Ta2O5 mole ratio x = 1, 2, 3, and 4 were prepared by traditional solid-state reaction method, and the influence of x on the phase composition, microstructure, and dielectric properties (the dielectric constant epsilon(r), the temperature coefficient of resonant frequency (f) and the quality factor Qf) of the materials was investigated using XRD, SEM, etc. The results indicated that the ceramics were composed of two crystalline phases MgTa2O6 and Mg4Ta2O9 in the composition range studied, and that the dielectric properties ln epsilon, 1/Qf, and (f) changed proportionally to the fraction of main crystal phases, which meet perfectly with the mixing model proposed in this study. It is obvious that the proportion of the two crystal phases could be precisely controlled by x, and thereby, the dielectric properties can be conveniently and precisely tailored. Our research provided a new microwave dielectric ceramic with the composition of 2MgO-Ta2O5, which has an ultrahigh Qf value (211 000 GHz), low dielectric constant epsilon(r) (19.9), and near zero temperature coefficient of resonant frequency (f) (8 ppm/degrees C). |
| 学科主题 | Materials Science, Ceramics |
| WOS记录号 | WOS:000431661300037 |
| 出版者 | WILEY |
| 源URL | [http://ir.sic.ac.cn/handle/331005/24846]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Inorgan Funct Mat & Device, Shanghai, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Chongqing Univ Technol, Dept Mat, Chongqing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Dang, Mingzhao,Ren, Haishen,Yao, Xiaogang,et al. Investigation of phase composition and microwave dielectric properties of MgO-Ta2O5 ceramics with ultrahigh Qf value[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY,2018,101(7):3026, 3031. |
| APA | Dang, Mingzhao.,Ren, Haishen.,Yao, Xiaogang.,Peng, Haiyi.,Xie, Tianyi.,...&Luo, Lan.(2018).Investigation of phase composition and microwave dielectric properties of MgO-Ta2O5 ceramics with ultrahigh Qf value.JOURNAL OF THE AMERICAN CERAMIC SOCIETY,101(7),3026. |
| MLA | Dang, Mingzhao,et al."Investigation of phase composition and microwave dielectric properties of MgO-Ta2O5 ceramics with ultrahigh Qf value".JOURNAL OF THE AMERICAN CERAMIC SOCIETY 101.7(2018):3026. |
入库方式： OAI收割
来源：上海硅酸盐研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。