H. Ohsato, A. Kan, K. Kakimoto, H. Ogawa, S. Nishigaki
{"title":"Microwave dielectric properties correlated to crystal structure: an analysis","authors":"H. Ohsato, A. Kan, K. Kakimoto, H. Ogawa, S. Nishigaki","doi":"10.1109/ISAF.2002.1195874","DOIUrl":null,"url":null,"abstract":"Microwave dielectric properties, quality factor, dielectric constant and temperature coefficient of resonant frequency, are discussed based on the crystal structure analysis of two systems. The tungstenbronze-type like Ba/sub 6-3x/R/sub 8+2x/Ti/sub 18/O/sub 54/ (R = rare earth) solid solutions and Y/sub 2/BaCuO/sub 5/ green phase are addressed as examples. The quality factor (Q/spl middot/f) is improved by ordering due to phase transformation, compositional ordering of cations and purifying the composition. Dielectric constant (/spl epsiv//sub r/) is affected by volume of cation polyhedron, tilting of TiO/sub 6/ octahedron and polarizability of cations. Temperature coefficients of resonant frequency is studied by crystal structural analysis with different temperature.","PeriodicalId":415725,"journal":{"name":"Proceedings of the 13th IEEE International Symposium on Applications of Ferroelectrics, 2002. ISAF 2002.","volume":"20 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2002-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the 13th IEEE International Symposium on Applications of Ferroelectrics, 2002. ISAF 2002.","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ISAF.2002.1195874","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
Microwave dielectric properties, quality factor, dielectric constant and temperature coefficient of resonant frequency, are discussed based on the crystal structure analysis of two systems. The tungstenbronze-type like Ba/sub 6-3x/R/sub 8+2x/Ti/sub 18/O/sub 54/ (R = rare earth) solid solutions and Y/sub 2/BaCuO/sub 5/ green phase are addressed as examples. The quality factor (Q/spl middot/f) is improved by ordering due to phase transformation, compositional ordering of cations and purifying the composition. Dielectric constant (/spl epsiv//sub r/) is affected by volume of cation polyhedron, tilting of TiO/sub 6/ octahedron and polarizability of cations. Temperature coefficients of resonant frequency is studied by crystal structural analysis with different temperature.
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