Microwave dielectric properties of 5Li2O-(Nb1−xMx)2O5-5TiO2 (M=Mo, W, 0
Ying Wu, Zhifu Liu, Yongxiang Li
{"title":"Microwave dielectric properties of 5Li2O-(Nb1−xMx)2O5-5TiO2 (M=Mo, W, 0<x<0.2) ceramics","authors":"Ying Wu, Zhifu Liu, Yongxiang Li","doi":"10.1109/IMWS-AMP.2015.7325053","DOIUrl":null,"url":null,"abstract":"5Li<sub>2</sub>O-(Nb<sub>1-x</sub>M<sub>x</sub>)<sub>2</sub>O<sub>5</sub>-5TiO<sub>2</sub> (M=Mo, W, 0<;x<;0.2) ceramics were prepared via solid state method. The phase composition and microwave dielectric properties were studied. There is no Mo-related phase observed even 20 mol% Mo is doped. However, the Li<sub>2</sub>WO<sub>4</sub> is clearly detected from XRD results for 5Li<sub>2</sub>O-(Nb<sub>1-x</sub>W<sub>x</sub>)<sub>2</sub>O<sub>5</sub>-5TiO<sub>2</sub> (x>0.05). Both Mo and W can lower the sintering temperature. The doped ceramics can be sintered at 1000°C which is 100°C lower than the sintering temperature of pure 5Li<sub>2</sub>O-(Nb<sub>1-x</sub>M<sub>x</sub>)<sub>2</sub>O<sub>5</sub>-5TiO<sub>2</sub> ceramic. The relative permittivity and Q×f value decrease gradually with increasing doping. And best microwave dielectric properties with a relative permittivity of 29 and a quality factor (Q×f) ~7,000 GHz (at 6.5 GHz) is achieved when 5Li<sub>2</sub>O-(Nb<sub>0.95</sub>Mo<sub>0.05</sub>)<sub>2</sub>O<sub>5</sub>-5TiO<sub>2</sub> is sintered at 1000°C/2h.","PeriodicalId":6625,"journal":{"name":"2015 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP)","volume":"24 1","pages":"1-3"},"PeriodicalIF":0.0000,"publicationDate":"2015-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2015 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/IMWS-AMP.2015.7325053","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

Abstract

5Li2O-(Nb1-xMx)2O5-5TiO2 (M=Mo, W, 0<;x<;0.2) ceramics were prepared via solid state method. The phase composition and microwave dielectric properties were studied. There is no Mo-related phase observed even 20 mol% Mo is doped. However, the Li2WO4 is clearly detected from XRD results for 5Li2O-(Nb1-xWx)2O5-5TiO2 (x>0.05). Both Mo and W can lower the sintering temperature. The doped ceramics can be sintered at 1000°C which is 100°C lower than the sintering temperature of pure 5Li2O-(Nb1-xMx)2O5-5TiO2 ceramic. The relative permittivity and Q×f value decrease gradually with increasing doping. And best microwave dielectric properties with a relative permittivity of 29 and a quality factor (Q×f) ~7,000 GHz (at 6.5 GHz) is achieved when 5Li2O-(Nb0.95Mo0.05)2O5-5TiO2 is sintered at 1000°C/2h.
5Li2O-(Nb1−xMx)2O5-5TiO2 (M=Mo, W, 0
5Li2O-(Nb1-xWx)2O5-5TiO2 (x>0.05)的x射线衍射(XRD)结果表明,5Li2O-(Nb1-xMx)2O5-5TiO2 (M=Mo, W, 02WO4)具有良好的检测效果。Mo和W均能降低烧结温度。掺杂陶瓷可以在1000℃下烧结,比纯5Li2O-(Nb1-xMx)2O5-5TiO2陶瓷的烧结温度低100℃。随着掺杂量的增加,相对介电常数和Q×f值逐渐减小。5Li2O-(Nb0.95Mo0.05)2O5-5TiO2在1000℃/2h下烧结时的微波介电性能最佳,相对介电常数为29,质量因子(Q×f) ~ 7000 GHz (6.5 GHz)。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享

联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信