溶融硫黄を用いるBa_XTiS_yの合成

概要

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Barium titanium sulfide, BaxTiSy with various x and y values, i. e. x = 0.6 ∼ 0.81 and y = 2.89 ∼ 3.82, has been synthesized by the reaction of BaS and TiS2 in sulfur melt at temperatures between 350 and 450 °C. The unreacted solvent sulfur was completely removed by two-step separation method after reaction. The results showed that the x value of BaxTiSy tended to increase with increasing heating temperature and heating time and the maximum x value was around 0.8. The y values were around 3.0 at 400 and 450 °C. The addition of 10 mol % BaCl2 was found to expedite greatly the yield of reaction to form BaxTiSy especially at higher heating temperature of 450 °C. The BaCl2 and BaS3 impurities were removed by treating with water. This treatment was also effected to change some X-ray peak positions of BaxTiSy prepared by the present low temperature method.
社団法人資源・素材学会の論文
1999-07-25