Larger Ba(NO3)2/Sr(NO3)2 crystal growth and solubility determination
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- 作者：Chen ; Wanchun ; Liu ; Daodan ; Zhang ; Chunling ; Wu ; Lijun ; Xie ; Anyun
- 关键词：A. Inorganic compounds ; B. Crystal growth ; C. Raman spectroscopy ; D. Optical properties
- 刊名：Materials Research Bulletin
- 出版年：2004
- 出版时间：February 2, 2004
- 年：2004
- 卷：39
- 期：2
- 页码：309-316
- 全文大小：279 K
文摘
The solubility of Ba(NO3)2 and Sr(NO3)2 crystals in aqueous solution from 25 to 65°C has been determined by both an optical interferometer and a weight technique. A Mach-Zehnder interferometer was used for measuring the concentration distribution of Ba(NO3)2 and Sr(NO3)2 near the solid/liquid interface during crystal growth and dissolution. A fringe carrier technique was introduced to visualize more clearly the boundary layer and to solve the concentration distribution. Crystals were successfully grown with sizes larger than 60mm×60mm×70mm by a temperature cooling method. The BaxSr1−x(NO3)2 crystal was also nucleated and grown. The Raman spectra of BaxSr1−x(NO3)2 indicate that the barium ions probably degrade the properties of Sr(NO3)2.