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Effect of Calcination Temperature on the Sintering Behaviors and Microwave Dielectric Properties of (Zn0.8Mg0.2)TiO3 System

하소온도가 (Zn0.8Mg0.2)TiO3계의 소결거동과 마이크로파 유전특성에 미치는 영향

  • 심우성 (순천향대학교 신소재화학공학부) ;
  • 방재철 (순천향대학교 신소재화학공학부)
  • Published : 2003.12.01

Abstract

We investigated the effects of calcination temperatures on the sintering behaviors and microwave dielectric Properties of (Z $n_{0.8}$M $g_{0.2}$)Ti $O_3$ system. Highly densified samples were obtained at the sintering temperatures below 100$0^{\circ}C$ with additions of 0.45 wt.%B $i_2$ $O_3$ and 0.55 wt.% $V_2$ $O_{5}$. From the examination of the existing phases and microstructures before and after sintering of (Z $n_{0.8}$M $g_{0.2}$)Ti $O_3$ system which is calcined at the various temperatures ranging from 80$0^{\circ}C$ to 100$0^{\circ}C$, it was found that higher Q${\times}$ $f_{o}$ values were obtained when unreacted phases in calcined body were reduced. When calcined at 100$0^{\circ}C$ and sintered at 90$0^{\circ}C$, it consists of hexagonal as. a main phase with uniform microstructure and exhibits Q${\times}$ $f_{o}$ value of 42,000 GHz and dielectric constant of 22. 22. 22.

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