| 습식직접 합성법에 의한 BaTiO3의 Strontium 고용에 관한 연구 |
| 이경희, 이병하, 김대웅1 |
명지대학교 공과대학 무기재료공학과
1고려화학(주) 중앙연구소 |
| The Study for Precipitation of Strontium in BaTiO3 by Direct Wet Process |
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| ABSTRACT |
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The reaction mechanism formed from TiCl4, BaCl2 and SrCl2 solution by direct wet process was studied. The reaction mechanisms of BaTiO3 and SrTiO3 were published, and then the purpose of this experiment as series for direct wet process is to elucidate precipitation-relation of barium and strontium. Though the basic reaction mechanism is similar to that of BaTiO3 and SrTiO3, the amorphous (Ba, Sr)-O-Ti bonding is identified by FT-IR spectrum. Precipitation-rate of barium in (Ba, Sr)TiO3 is lower than that in BaTiO3 and precipitation-rate of strontium in (Ba, Sr)TiO3 is the same of that in SrTiO3, but the precipitated quantity of barium and strontium in (Ba, Sr)TiO3 is smaller than that in each reaction system. Especially, it is identified that critical pH for crystallization of BaTiO3, SrTiO3 and (Ba, Sr)TiO3 is at pH 12.6 |
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