Direct growth of aggregates on {110} faces of cadmium mercury thiocyanate crystals

摘要

New growth phenomena - direct incorporation of aggregates have been observed on the {110} faces of cadmium mercury thiocyanate CdHg(SCN)(4) crystals by atomic force microscopy grow in two forms: some directly cover up the steps and forms new growth layers; while others are just incorporated at the step edges. These aggregates, which are mostly oriented along [111] direction, are formed by small columnar structural units. The aggregates have the similar structure of CdHg(SCN)(4) crystals and greatly vary in nature with the variation of solution supersaturation sigma and growth time t. With the increase of sigma the aggregates become larger, consistent with the variation of growth units dimension with the supersaturation; and with the increase of growth time the aggregates become more structurally substantial. These observations have led to a new understanding about the crystal growth. [References: 11]