Journal of the Korean Crystal Growth and Crystal Technology (한국결정성장학회지)

The Korea Association of Crystal Growth (한국결정성장학회)
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Preparation of $Pb(Sc_{1/2}Nb_{1/2})O_3$ powders by the molten salt synthesis method

용융염 합성법에 의한 $Pb(Sc_{1/2}Nb_{1/2})O_3$ 분말의 제조

  • Published : 1997.08.01
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Abstract

Lead scandium niobate powders were prepared by a molten salt synthesis method using KCl as a flux. Variations in phase formation and particle morphology were investigated for the temperature range $700^{\circ}C$ to $850^{\circ}C$. Pure $Pb(Sc_{1/2}Nb_{1/2})O_3$ perovskite phase was formed at $850^{\circ}C$ after 2hrs and the average particle size of powder was below 0.5 $\mu\textrm{m}$. The results are discussed with respect to DTA, X-ray diffraction, and microstructural characterization data.

KCl을 flux로 사용한 용융염 합성법을 이용하여 $Pb(Sc_{1/2}Nb_{1/2})O_3$ 분말을 제조하였다. $700^{\circ}C$부터 $850^{\circ}C$까지의 온도 범위에서 상형성 및 분말 상태의 변화를 조사하였다. 85$0^{\circ}C$에서 2시간동안 하소하였을 때 순수한 $Pb(Sc_{1/2}Nb_{1/2})O_3$상이 형성되었으며, 평군 입자 크기는 0.5 $\mu \textrm{m}$ 이하이었다. 시차열분석, X-선 회절 분석, 미세구조 변화를 통해 결과를 고찰하였다.

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