(Sr.Pb)TiO$_3$계 세라믹의 유전특성에 미치는 Bi$_2$O$_3$.3TiO$_2$의 영향

Effects of Bi$_2$O$_3$.3TiO$_2$ on the Dielectric Properties of Ceramics in the system (Sr.Pb)TiO$_3$

(1-X)(Sr$\_$7/9/Pb$\_$2/9/)$\_$(1-y)/(Ca$\_$1/5/Mg$\_$4/5/)$\_$y/TiO$_3$+X(BiO$_2$O$_3$$.$3TiO$_2$) (y=0.145, 0$\leq$X$\leq$0.08) ceramics were fabricated by the mixed oxide method. The sintering temperature and time were 1180∼1230[$^{\circ}C$], 2[hr], respectly. The grain size were grown with increasing the contents of Bi$_2$O$_3$$.$3TiO$_2$, but decreased more and less in the specimens which had more than 0.04[mol].