〔閲覧〕【著作】(Sone Masayo/[井上 哲夫]/[柳谷 伸一郎]/[森 篤史]/Habit changes of NaBrO3 crystals grown from aqueous solution doped with sodium acetate/[Journal of Crystal Growth])
(英) Habit changes of NaBrO3 crystals grown from aqueous solution doped with sodium acetate (日)
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(英) The effects of doping of sodium acetate upon the habit changes of NaBrO3 crystals have been investigated. The crystals were grown from aqueous solution under the following conditions: (i) supersaturations, ln ðC=CeÞ ¼ 020:4; (Ce: equilibrium mol fraction); (ii) growth temperatures, 15 431C. The gross morphologies of crystals have taken on three distinct forms: tetrahedral {1 1 1} habit, cubic {1 0 0} and intermediate ({1 1 1}+{1 0 0}) habits. The result of habit changes was shown in a plot of growth temperature against supersaturation as compared to the results from nondoping and doping of 1.15mol% acetic acid (J. Crystal Growth 158 (1996) 336; J. Crystal Growth 212 (2000) 507). The dependency of the growth rates upon the growth temperatures was investigated under the conditions where the supersaturation was kept constant. It was found that the growth rates of {1 0 0} were drastically reduced at higher growth temperatures. (日) 本研究はNaBrO3の晶相変化と成長条件に関する研究である.特に注意を払ったのは,不純物添加の効果である.本研究では不純物として酢酸Naを選んだ.結果は温度を縦軸に,過飽和度を横軸にとって,形の状態図として纏めた.要約すると伊かのようである.①