Anomalous Correlation between Dielectric Constant and Tunability in (Ba,Sr)TiO^sub 3^-MgO-Mg^sub 2^SiO^sub 4^ Composite Ceramics

(Ba, Sr)...composite ceramics were prepared by a solid-state reaction method. The microstructures, microwave dielectric characteristics, and tunability of composite ceramics were investigated. An anomalous correlation between tunability and dielectric constant was observed: with the increase in ......

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Bibliographic Details
Published inJournal of the American Ceramic Society Vol. 96; no. 4; p. 1203
Main Authors He, Yanyan, Zhao, Jingyuan, Xu, Yebin, Li, Changnian
Format Journal Article
LanguageEnglish
Published Columbus Wiley Subscription Services, Inc 01.04.2013
Subjects
Ceramics
Composite materials
Correlation analysis
Dielectric properties
Electric fields
Microwaves
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Summary:(Ba, Sr)...composite ceramics were prepared by a solid-state reaction method. The microstructures, microwave dielectric characteristics, and tunability of composite ceramics were investigated. An anomalous correlation between tunability and dielectric constant was observed: with the increase in ... content and the decrease in MgO content, the dielectric constant of (Ba, Sr)... composite ceramics decreases, but the tunability increases. The anomalous increased tunability is beneficial for tunable microwave applications and can be attributed to the redistribution of the electric field. For ..., the dielectric constant was decreased from 164.2 to 126.5 by increasing ...content from 5 to 45 wt% and the tunability at 3.9 kV/mm increased from 11.5% to 15.2%. (ProQuest: ... denotes formulae/symbols omitted.)
ISSN:0002-7820
1551-2916