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Growth and Characterization of Urea‐(DL) Tartaric Acid Single Crystals
Author(s) -
Lü M. K.,
Meng F. Q.,
Yang Z. H.,
Yu W. T.,
Zeng H.
Publication year - 1996
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.2170310702
Subject(s) - monoclinic crystal system , tartaric acid , urea , aqueous solution , crystallography , crystal structure , nonlinear optical , crystal (programming language) , slow cooling , single crystal , crystal growth , materials science , characterization (materials science) , lattice (music) , chemistry , organic chemistry , nanotechnology , nonlinear system , physics , quantum mechanics , computer science , acoustics , programming language , metallurgy , citric acid
A new organic UV nonlinear optical crystal urea‐(DL)tartaric acid [CO(NH 2 ) 2− (DL) C 4 H 6 O 6 ] (abbreviated as U(DL)T) is reported. Large single crystals have been grown from aqueous solution by the cooling method. They belong to the monoclinic space group P2 1 and the lattice parameters are: a = 7.6973 Å, b = 23.3310 Å, c = 4.8727 Å, and β = 100.82°. The structure and some of its physical properties have been determined. The crystal is transparent from 0.24 to 1.95 μm. The efficiency of powder SHG is larger by one order of magnitude than that of KDP. Thus the crystal will be a useful NLO material.