Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Temperature Dependence of Dielectric Properties of BaTiO$_3$ doped with Nb$_2$O$_5$ and CoO

Nb$_2$O$_5$와 CoO의 복합첨가가 BaTiO$_3$ 유전특성의 온도안전성에 미치는 효과

  • 최광휘 (성균관대학교 재료공학과) ;
  • 황진현 (성균관대학교 재료공학과) ;
  • 한영호 (성균관대학교 재료공학과)
  • Published : 1998.08.01
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Abstract

The effect of {{{{ {{Nb }_{2 }O }_{5 } }} and CoO addition on the temperature dependence of the {{{{ {BaTiO }_{3 } }}-based ceramic capa-citor has been studied. X7R with moderate temperature dependence has been developed by means of pre-cisely controlled {{{{ {{Nb }_{2 }O }_{5 } }}/CoO ratio. Dielectric constant(K) and dissipation factor(DF) were 3500 and 1.5% respectively. As the content of {{{{ {{Nb }_{2 }O }_{5 } }} was increased the curie temperature(Tc) was shifted to lower tem-perature and the dielectric constant at Tc was decreased. The proper addition of CoO with {{{{ {{Nb }_{2 }O }_{5 } }} improved the temperature dependence of dielectric properties of the {{{{ {BaTiO }_{3 } }}-based ceramic capacitor.

Keywords

References

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