Direct Growth of Aggregates on {110} Faces of Cadmium Mercury Thiocyanate Crystals

✍ Scribed by X.N. Jiang; D. Xu; D.L. Sun; D.R. Yuan; M.K. Lu; S.Y. Gou; X.L. Yu

• Publisher: John Wiley and Sons
• Year: 2002
• Tongue: English
• Weight: 627 KB
• Volume: 37
• Category: Article
• ISSN: 0232-1300
• DOI: 10.1002/1521-4079(200202)37:1<43::aid-crat43>3.0.co;2-d

✦ Synopsis

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. These aggregates 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 σ and growth time t. With the increase of σ 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.