A Study of the synthesis and the properties on microwave dielectric material of BaO--$Nd_2O_3$-$TiO_2$and BaO-(Sm, $ND)_2O_3$-$TiO_2$ system

BaO-$Nd_2O_3$-$TiO_2$계 및 BaO-(Sm, $ND)_2O_3$-$TiO_2$계 마이크로파 유전체의 합성 및 제특성에 관한 연구

  • 이용석 ((주)동서 세라믹사업부 부설연구소) ;
  • 김준수 ((주)동서 세라믹사업부 부설연구소) ;
  • 이병하 (명지대학교 무기재료공학과)
  • Published : 1997.09.01


The microwave dielectric materials of the BaO-Nd$_2$O$_3$-TiO$_2$and BaO-(Sm, Nd)$_2$O$_3$-TiO$_2$system were synthesized by conventional ceramic processing and sintered 1220 to 140$0^{\circ}C$ for 2 hours respectively. Their crystallization and dielectric properties were examined. In the BaO-Nd$_2$O$_3$-TiO$_2$ and BaO-(Sm, Nd)$_2$O$_3$-TiO$_2$system. Nd$_2$Ti$_2$O$_{7}$ and (Sm, Nd)$_2$Ti$_2$O$_{7}$ were observed as a second phase respectively. The maximum relative dielectric constant were 79,99 for the BaO-Nd$_2$O$_3$-TiO$_2$system and 105.07 for the BaO-(Sm,Nd)$_2$O$_3$-TiO$_2$system and their Q-value were over 2000 at 3GHz.GHz.