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Raman Study of Lattice Vibration Modes and Growth Mechanism of KDP Single Crystals
Author(s) -
Lu G.W.,
Sun X.
Publication year - 2002
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 - 10.1002/1521-4079(200202)37:1<93::aid-crat93>3.0.co;2-3
Subject(s) - raman spectroscopy , lattice vibration , lattice (music) , crystal growth , crystallography , crystal (programming language) , crystal structure , vibration , molecular vibration , chemistry , materials science , condensed matter physics , optics , phonon , physics , programming language , quantum mechanics , computer science , acoustics
The space group theoretical analyses and assignment of the lattice modes of the KDP crystal have been made, and the Raman spectra of their growth solution have been observed in different growth regions. The attention is focused on the analysis of the 912 cm ‐1 band arising from the H 2 PO 4 ‐ anions in the interface between the KDP crystals and their growth solution. This has been assigned to the asymmetrical stretching mode of the deformation P(OH) 2 . From these results, the growth units of KDP crystal has been concluded to be the dimers of H 2 PO 4 ‐ anions. We consider that the result presented here is an important step towards the development of more complete crystal growth theories.