Comments on the paper "Studies on growth and characterization of a novel nonlinear optical and ferroelectric material: N,N-dimethylurea picrate single crystal"

Srinivasan, B.R.; Naik, S.G.; Dhavskar, K.T.

Comments on the paper "Studies on growth and characterization of a novel nonlinear optical and ferroelectric material: N,N-dimethylurea picrate single crystal"

Srinivasan, B.R.; Naik, S.G.; Dhavskar, K.T.

Source : Journal of Crystal Growth. 409; 2015; 62-64.

URI: http://www.sciencedirect.com/science/article/pii/S0022024814006423
http://irgu.unigoa.ac.in/drs/handle/unigoa/4027

Date: 2015

Document Type: Journal article

Abstract:

The authors of the title paper (J.Cryst.Growth 393 (2014) 7–12) report to have grown a novel organic nonlinear optical (NLO) crystal namely N,N-dimethylurea picrate (NNDMP) by the slow evaporation technique using dimethylformamide (DMF) as solvent.Many points of criticism, concerning the characterization of this so called \{NNDMP\} crystal, are highlighted in this comment to prove that \{NNDMP\} is not a novel \{NLO\} crystal.

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