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http://dx.doi.org/10.4313/JKEM.2003.16.5.397

Microwave Dielectric Properties of (1-x)ZnWO4-xTiO2 Ceramics  

윤상옥 (강릉대학교 세라믹공학과)
김대민 (강릉대학교 세라믹공학과)
심상흥 (삼척대학교 전기공학과)
강기성 (강원도립대학 정보통신과)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.16, no.5, 2003 , pp. 397-403 More about this Journal
Abstract
Microwave dielectric properties of (1-x)ZnW $O_4$-xTi $O_2$ ceramic systems were investigated with calcination temperatures and Ti $O_2$ contents. The ZnW $O_4$ ceramic could be suitably sintered at 1075$^{\circ}C$ and showed the dielectric constant of 13.6, quality factor(Q$\times$ $f_{O}$value) of 22,000 and temperature coefficient of resonant frequency($\tau$$_{f}$) of -65$\pm$2ppm/$^{\circ}C$. Increasing the amount of Ti $O_2$ in the range of 0.25 to 0.45 mol, the dielectric constant and $\tau$$_{f}$ increased due to the role of Ti $O_2$ but the quality factor decreased due to the increase of phase boundaries. The 0.7ZnW $O_4$-0.3Ti $O_2$ ceramic showed the dielectric constant of 19.8, qualify factor(Q$\times$ $f_{0}$) of 20,000 and $\tau$$_{f}$ of -3$\pm$1ppm/$^{\circ}C$.>.EX>.>.>.
Keywords
Microwave dielectrics; $ZnWO_{4}-xTiO_{2}$; Dielectric constant($c_r$); Quality factor(GHz); Temperature coefficient of resonance frequency($\tau$$_{}$ f/); Mixtures;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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