Morphological Evolution during Synthesis of New AlPO4·H2O Crystal

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2005,（10）
• 页码范围: 2704-2707
• 页数: 4页
• 语种: 英文

摘要

A new crystal of aluminophosphate, A1PO4·H2O, is synthesized from two-batch aqueous solution under hydrothermal conditions. Three types of the crystal habits, i.e. the tetragonal double pyramid, the tetragonal prism and the plate-type tetragonal prism, are found from batch-A solution. Two types of the crystal habits,i.e. the hexagonal pyramid and the strip-type tetragonal prism, are found from batch-B solution. The change of crystal morphology is originated from the fluctuation of the synthesis conditions, such as the supersaturation,the temperature and the impurity content. It causes change of the step energies, the defect density and the step roughness, and further, change of the growth rates. Since the crystal rnorphology is sensitive to the mass transport mechanism, the crystal habits could be changed under the microgravity.