• Title/Summary/Keyword: $BaTiO_{3}$

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Dielectric properties of low temperature firing glass reacted (Ba, Sr)$TiO_3$$ ceramic capacitors (저온소결용 (Ba, Sr)$TiO_3$-Glass계 세라믹스의 유전특성)

  • Gu, Ja-Won;Seol, Yong-Geon;Choe, Seung-Cheol
    • Korean Journal of Materials Research
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    • v.5 no.2
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    • pp.151-156
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    • 1995

  • Low temperature firing $(Ba, Sr)TiO_{3}$ dielectrics were successfully prepared with lead based glass and those electrical properties were investigated. Different amount of PbO content glass materials were added to dielectrics to investigate the sinterability and its dielectric properties. Also, various compositions of ceramic capacitors were prepared to applicate in multilayer ceramic capacitors. A large amount of experiment has been done with various Pb contented glasses and different sintering temperatures. The sintering temperature of $(Ba,Sr)TiO_{3}$can be reduced from $1350^{\circ}C$to as low as $1050^{\circ}C$ with 4wt% addition of $PbO-ZnO-B_{2}O_{2}$ glass materials. Its dielectric constant at room temperature was up to 8100 with low dielectric loss, 0.005. This ceramic capacitor showed fully fired microstructures with its grain size of 1-3$\mu \textrm{m}$. The sintered body which was sintered at $1150^{\circ}C$ for 2hr with 4wt% $PbO-ZnO-B_{2}O_{2}$ glass material addition satisfied the Z5U specification of the EIAS.

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