{"title":"Sintering process, phase composition, and microwave dielectric properties of NaLn(WO4)2(ln = La, Nd, Sm) ceramics prepared by reaction sintering method","authors":"Haiqing Deng, Xin Qu, Yinghan He, Xiaoli Wei, You Wu, Xiuli Chen, Huanfu Zhou","doi":"10.1007/s10832-023-00329-7","DOIUrl":null,"url":null,"abstract":"<div><p>Novel ultra-low loss NaLn(WO<sub>4</sub>)<sub>2</sub> (Ln = La (NLW), Nd (NNW), Sm (NSW)) (NLnW) microwave dielectric ceramics were prepared by a reaction sintering method. The sintering process of the samples was investigated by TG-DSC. XRD refinement and Raman spectra results ascertained that the NLnW ceramics have scheelite structure with space group of <i>I</i>4<sub>1</sub><i>/a</i>. The microwave dielectric properties of NLnW ceramics and the relationship between the structure and performances were studied. The relationship between lattice vibration and <i>Qf</i> were analyzed by Raman spectroscopy. Especially, the NSW ceramics sintered at 1100 ℃ for 4 h show outstanding microwave dielectric properties of <i>ε</i><sub><i>r</i></sub> = 10.07, <i>Qf</i> = 73,734 GHz (at 12.21 GHz), <i>τ</i><sub><i>f</i></sub> = -42.6 ppm/°C, which providing a promising application in fifth generation communications.</p></div>","PeriodicalId":625,"journal":{"name":"Journal of Electroceramics","volume":"51 2","pages":"59 - 70"},"PeriodicalIF":1.7000,"publicationDate":"2023-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Electroceramics","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s10832-023-00329-7","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}
引用次数: 0
Abstract
Novel ultra-low loss NaLn(WO4)2 (Ln = La (NLW), Nd (NNW), Sm (NSW)) (NLnW) microwave dielectric ceramics were prepared by a reaction sintering method. The sintering process of the samples was investigated by TG-DSC. XRD refinement and Raman spectra results ascertained that the NLnW ceramics have scheelite structure with space group of I41/a. The microwave dielectric properties of NLnW ceramics and the relationship between the structure and performances were studied. The relationship between lattice vibration and Qf were analyzed by Raman spectroscopy. Especially, the NSW ceramics sintered at 1100 ℃ for 4 h show outstanding microwave dielectric properties of εr = 10.07, Qf = 73,734 GHz (at 12.21 GHz), τf = -42.6 ppm/°C, which providing a promising application in fifth generation communications.
期刊介绍：
While ceramics have traditionally been admired for their mechanical, chemical and thermal stability, their unique electrical, optical and magnetic properties have become of increasing importance in many key technologies including communications, energy conversion and storage, electronics and automation. Electroceramics benefit greatly from their versatility in properties including:
-insulating to metallic and fast ion conductivity
-piezo-, ferro-, and pyro-electricity
-electro- and nonlinear optical properties
-feromagnetism.
When combined with thermal, mechanical, and chemical stability, these properties often render them the materials of choice.
The Journal of Electroceramics is dedicated to providing a forum of discussion cutting across issues in electrical, optical, and magnetic ceramics. Driven by the need for miniaturization, cost, and enhanced functionality, the field of electroceramics is growing rapidly in many new directions. The Journal encourages discussions of resultant trends concerning silicon-electroceramic integration, nanotechnology, ceramic-polymer composites, grain boundary and defect engineering, etc.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
