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Growth morphology of {100} faces of L‐Arginine phosphate monohydrate single crystals investigated by atomic force microscopy
Author(s) -
Geng Y. L.,
Xu D.,
Sun D. L.,
Zhang G. H.,
Du W.,
Liu H. Y.,
Wang X. Q.
Publication year - 2004
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.200310243
Subject(s) - hillock , supersaturation , crystallography , morphology (biology) , chemistry , crystal (programming language) , impurity , dislocation , crystal growth , arginine , materials science , composite material , amino acid , geology , biochemistry , computer science , programming language , paleontology , organic chemistry
Morphology of the {100} faces of L‐arginine phosphate monohydrate (LAP) single crystal grown at 25 °C at a supersaturation of 0.32 has been discussed. The rectangular dislocation growth hillocks elongate along the b direction, which manifests the fast growth due to the strong Period Bond Chain (PBC) bonds along this direction. Apart from that, the growth hillocks are consistent with the macro‐morphology of the crystal grown at the pH value of about 4.2. The lopsided shapes of the hillocks result from step bunching. Triangular pits are assumed to form during the process of the steps getting across the impurities. The hollow cavities existing on the growth hillocks also elongate along the b direction and they can lead to the formation of other defects such as dislocations. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)