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J. Korean Ceram. Soc. > Volume 36(6); 1999 > Article
Journal of the Korean Ceramic Society 1999;36(6): 590.
BaO.Sm$_2$O$_3$.xTiO$_2$(x=3,4,5) 마이크로바 유전체의 합성과 유전 특성
임병수, 이병하
명지대학교 무기재료공학과
The Synthesis and Dielectric Properties of BaO.Sm$_2$O$_3$.xTiO$_2$(x=3,4,5) Microwave Dielectrics
The BaO.Sm2O3.xTiO2(x=3,4,5) ceramics among the BaO.Ln2O3.xTiO2(Ln=Nd, Sm,. La, Pr) microwave dielectrics was synthesized by a solid state reaction sintered at 126$0^{circ}C$ to 134$0^{circ}C$ for 2h and then tested their crystalline phases and dielectric properties. In BaO.Sm2O3.3TiO2 Sm2Ti2O7 main phase Ba37.5Sm7.5Til8O54 and BaO-TiO2 phases were present and the unreacted TiO2 remained In BaO.Sm2O3.4TiO2 Ba37.5Sm7.5Til8O54 and Ba2Ti9O20 final phases were produced through the Sm2Ti2O7 second phase and also in x=5 composition the unreacted TiO2 existed. Dielectric properties have good values in dense BaO.Sm2O3.xTiO2(x=4, 5) ceramics sintered at 132$0^{circ}C$ and their properties are better in x=5 than x=4
Key words: Microwave dielectric, Dielectric properties
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