Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Microwave Dielectric Properties $BaTi_{4}O_{9}$ Ceramics with Addition of CoO

CoO 첨가에 따른 $BaTi_{4}O_{9}$ 세라믹스의 마이크로파 유전특성

  • Published : 2002.11.07
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Abstract

The $BaTi_{4}O_{9}$ ceramics with CoO(0.5wt%) were prepared by the conventional mixed oxide method. The sintering temperature and time were $1350^{\circ}C$, 3hr., respectively. The structural properties were investigated with sintering temperature by XRD. Also the microwave dielectric properties of the $BaTi_{4}O_{9}$ ceramics were studied. According to the X -ray diffraction patte구 of the $BaTi_{4}O_{9}$ ceramics with CoO(0.5wt%), the orthorhombic $BaTi_{4}O_{9}$ structure was appeared. In the case of $BaTi_{4}O_{9}$ ceramics with CoO(0.5wt%), dielectric constant $(\varepsilon_{r})$, quality factor$(Q{\times}f_r)$ and temperature coefficient of resonant frequency$(\tau_{f})$ were 40.8, 43,270 and $2.5ppm/^{\circ}C$, respectively.ࠀࠀ Ѐ耀 Āࠀ 耀耀  ࠀက@ĀĀȀЀĀကЀကࠀ耀Ȁ@ࠀЀЀ€Ȁ耀 @䀀က 䀀Ѐ€耀 Ȁ @ ࠀЀЀကȀȀЀ Āက蠀

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