Surface defects and mechanical hardness of rapidly grown DAST crystals

DAST crystals were grown by the two-zone growth technique and the crystal surfaces were analyzed with help of optical and scanning electron microscopic results. Owing to a high supersaturation in the growth zone, growth striations were observed on the {0 0 1} smooth surfaces (vicinal), while macrost...

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Bibliographic Details
Published in:Journal of crystal growth 2006-12, Vol.297 (1), p.146-151
Main Authors: Haja Hameed, A.S., Rohani, S., Yu, W.C., Tai, C.Y., Lan, C.W.
Format: Article
Language:English
Subjects:
A1. Convection
A1. Defects
A1. Optical microscopy
A1. Surfaces
A2. Growth from solution
B1. Organic compounds
B2. Nonlinear optical materials
Condensed matter: structure, mechanical and thermal properties
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Growth from solutions
Materials science
Mechanical and acoustical properties of condensed matter
Mechanical properties of solids
Methods of crystal growth
physics of crystal growth
Physics
Tribology and hardness
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Summary:DAST crystals were grown by the two-zone growth technique and the crystal surfaces were analyzed with help of optical and scanning electron microscopic results. Owing to a high supersaturation in the growth zone, growth striations were observed on the {0 0 1} smooth surfaces (vicinal), while macrosteps were observed on the {0 0 1¯} rough surfaces of the grown crystals. Hillocks occurred on the F-surface, because new layers nucleated before the lateral growth of the deeper layers were completed. The microhardness of the grown crystals was measured on the (0 0 1) and (1 1 0) faces under different loads.
ISSN:0022-0248
1873-5002
DOI:10.1016/j.jcrysgro.2006.09.034