Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Synthesis of $Pb(Mg_{1/3}Nb_{2/3})O_3$ by $Li_2SO_4-Na_2SO_4$ Molten Salts

$Li_2SO_4-Na_2SO_4$ 용융염에 의한 $Pb(Mg_{1/3}Nb_{2/3})O_3$의 합성

  • 윤기현 (연세대학교 세라믹공학과) ;
  • 조용수 (연세대학교 세라믹공학과) ;
  • 남윤우 (연세대학교 세라믹공학과) ;
  • 강동헌 (수원대학교 전자재료공학과)
  • Published : 1993.07.01
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Abstract

Stability and formation of Pb(Mg1/3Nb2/3)O3 (PMN) phase synthesized in Li2SO4-Na2SO4 molten salts have been investigated. And powder characteristics of PMN have been studied with a variation of processing parameters such as temperature, time, amount of the salts, and excess PbO. More ratio of Li2SO4 to Na2SO4 influences the percentage of perovskite phase due to the difference of the eutectic point of the salts, but does not influence the powder characteristics. The shape of PMN particles shows faceted morphology with bimodal distribution consisting with large and submicron parts. Particle size of PMN increased greatly with increasing soaking time or amount of salts rather than temperature. The addition of excess PbO resulted in round PMN crystallites without submicron particles. These results are discussed by XRD, SEM and thermal analyses.

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