Microstructure and Dielectric Properties of (Sr.Ca)$TiO_3$-based Ceramics on the thermal diffusing time

열확산 시간에 따른 (Sr.Ca)$TiO_3$계 세라믹의 미세구조 및 유전특성

In this paper, the microstructure and the dielectric properties of the $Sr_{1-x}Ca_xTiO_3$($0{\leq}x{\leq}0.2$)-based grain boundary layer ceramics were investigated. The 2nd phase formed by thermal diffusing from the surface lead to a very high apparent dielectric constant, ${\varepsilon}_r$ > 50000, and tan$\delta$ < 0.05, $\Delta$C < ${\pm}$ 10%.