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Crystal Research and Technology |
Cryst. Res. Technol. 38,
941 (2003) - Abstract -
Study on rapid growth of highly-deuterated DKDP crystals
S. L. Wang, Z. S. Gao, Y. J. Fu, A. D. Duan, X. Sun, C. S. Fang, X. Q. Wang
State Key Laboratory of Crystal Materials, Institute of Crystals, Shandong University, Jinan 250100, P. R. China
| Keywords | DKDP crystals, rapid growth, solubility transition, growth rate |
| PACS | 81.10.Dn |
| DOI | 10.1002/crat.200310117 |
Highly-deuterated potassium dihydrogen phosphate (DKDP) crystals were grown rapidly from point seeds under high supersaturation in a temperature range of 40-60 °C. The growth rate was about 1-2 order of magnitude higher than that of the traditional temperature reduction method. It was found that highly pure raw materials, overheating at high temperature, ultrafine filtration and supersaturation stability were needed to keep the solution from spontaneous nucleation at high overcooling. The effect of growth conditions on pyramid faces was different from that of prismatic faces. The tetragonal to monoclinic phase solubility transition scarcely occurred in our experiments even though the overcooling of monoclinic phase was as high as 10 °C in some cases.
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