Free-growth forms and growth kinetics of tetra-n-butyl ammonium bromide semi-clathrate hydrate crystals
- 作者：Shimada ; Wataru ; Ebinuma ; Takao ; Oyama ; Hiroyuki ; Kamata ; Yasushi ; Narita ; Hideo
- 关键词：61.72.Hh ; 68.10.Jy ; 81.10.Dn ; A1. Crystal morphology ; A1. Optical microscopy ; A1. Roughening ; A2. Single crystal growth ; B1. Clathrate hydrate ; B1. tetra-n-butyl ammonium bromide (TBAB)
- 刊名：Journal of Crystal Growth
- 出版年：2005
- 期刊代码：49_00220248
- 类别：ch
- 出版时间：January 15, 2005
- 卷：274
- 期：1-2
- 页码：246-250
- 文件大小：237 K
摘要
We observed in situ the free-growth forms and measured the growth velocity of tetra-n-butyl ammonium bromide (TBAB) semi-clathrate hydrate single crystals. The free-growth forms changed with supercooling, however the crystals were columnar at all supercoolings measured, up to 2.4K. The side surfaces had a critical supercoolings of about 1.4K, below which growth was not measured. At the bottom surface, the growth roughening was observed at the supercooling 0.9K. These results show that the growth of TBAB hydrate is extremely affected by interfacial kinetics.