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http://dx.doi.org/10.4191/KCERS.2008.45.5.251

Effects of Crystal Structure on Microwave Dielectric Properties of Ceramics  

Kim, Eung-Soo (Department of Materials Engineering, Kyonggi University)
Jeon, Chang-Jun (Department of Materials Engineering, Kyonggi University)
Kim, Sung-Joo (Department of Materials Engineering, Kyonggi University)
Kim, Su-Jung (Department of Materials Engineering, Kyonggi University)
Publication Information
Journal of the Korean Ceramic Society / v.45, no.5, 2008 , pp. 251-255 More about this Journal
Abstract
Microwave dielectric properties of $MgTiO_3,\;MgWO_4,\;MgNb_2O_6$, and $MgTa_2O_6$ were investigated based on the structural characteristics. The dielectric constant (K) was dependent on the dielectric polarizabilities of the specimens, and the deviation of the observed dielectric polarizabilities (${\alpha}_{obs.}$) from the theoretical dielectric polarizabilities (${\alpha}_{theo.}$) were decreased with increasing of Mg-site bond valence. Quality factors (Qf) were affected by the sharing type of $MgO_6$ and $BO_6$ octahedra. Temperature coefficient of resonant frequency (TCF) was decreased with increasing of average octahedral distortion.
Keywords
Microwave dielectric properties; Octahedral distortion; Dielectric polarizabilities; Bond valence;
Citations & Related Records

Times Cited By SCOPUS : 3
연도 인용수 순위
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