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- Title
Effect of supersaturation on hillock of directional Growth of KDP crystals.
- Authors
Fa-Fu Liu; Guang-Wei Yu; Li-Song Zhang; Liang Li; Bo Wang; Xiao-Yu Gan; Hong-Kai Ren; Hai-Liang Zhou; Li-Li Zhu; Shao-Hua Ji; Ming-Xia Xu; Bao-An Liu; Xin-Guang Xu; Qing-Tian Gu; Xun Sun
- Abstract
KDP single crystals were grown in aqueous solution by using “point seeds” with a defined crystallographic direction of 59° to the Z axis. When hillock slopes on the (100) face of KDP crystals were measured within the supersaturation (σ) range of 0 < σ ≤ 0.06, the slope of hillocks with hollow cores depended nonlinearly on supersaturation. Below σ = 0.02, the hillock slope depended on supersaturation, but when σ was ≥ 0.02, the hillock slope increased more gradually and was less dependent on supersaturation. Hollow funnel-shaped growth dislocation on the (100) face of KDP crystals was observed at σ = 0.04, characterized by large holes with micro-steps and step bunching inside, the formation of which were analyzed. The result verified that the reversed growth appears to occur within hollow channels found on growth hillocks.
- Subjects
SUPERSATURATION; SINGLE crystals; POTASSIUM dihydrogen phosphate; LASER beams; ATOMIC force microscopy
- Publication
Scientific Reports, 2014, p1
- ISSN
2045-2322
- Publication type
Article
- DOI
10.1038/srep06886