锗酸铅晶体枝蔓晶生长的实时观察研究
1.中国科学院上海硅酸盐研究所, 上海 200050;
2. 宇宙航空研究开发机构, 日本茨城县
收稿日期: 2005-03-25
修回日期: 2005-05-26
网络出版日期: 2006-03-20
In Situ Observation of Dendrite in Pb5Ge3O11Crystal Growth
1.Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China;
2. Space Utilization Research Center, Office of Space Utilization System, JAXA,
2-2-1, Sengen, Tsukuba, Ibaraki 305, Japan
Received date: 2005-03-25
Revised date: 2005-05-26
Online published: 2006-03-20
洪勇 , 金蔚青 , 潘秀红 , 依田真一 . 锗酸铅晶体枝蔓晶生长的实时观察研究[J]. 无机材料学报, 2006 , 21(2) : 335 -338 . DOI: 10.3724/SP.J.1077.2006.00335
The whole process of the dendrite growth in PGO melt crystal growth was visualized in the $in~situ$
observation system. It was pointed out that the dendrite had relation with the PbO impurity. An
concentration diffusive layer arising from the impurity was observed, and the dendrite growth was
triggered when the diameter of the layer exceeded the critical value about 12$\mu$m. The rate
of the main trunk of the dendrite against the time was measured. It was noted that the rate was
affected by some factors such as the appearance of the branches and the turning of the main
trunk, which was assumed according to our early work.
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