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# Crystal growth of semiorganic sodium p-nitrophenolate dihydrate from aqueous solution and their characterization

Vanishri, S and Brahadeeswaran, S and Bhat, HL (2005) Crystal growth of semiorganic sodium p-nitrophenolate dihydrate from aqueous solution and their characterization. In: The 14th International Conference on Crystal Growth and the 12th International Conference on Vapor Growth and Epitaxy, Feb 15 2005, e141-e146.

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## Abstract

Sodium p-nitrophenolate dihydrate $(NPNa.2H_2O)$, is a semiorganic nonlinear optical crystal which is reported to have an effective nonlinear optical coefficient of 5 pm/V. The crystal is usually grown from methanol. By suitably varying the growth parameters, we obtained stable, transparent, sodium p-nitrophenolate dihydrate using water as a solvent. Large single crystals of the dimension $20 \times 17 \times 8 mm^3$were grown by a temperature-lowering method. Preliminary characterizations were carried out on the grown sample and compared with methanol-grown $NPNa.2H_2O$. The optical transmission study on these crystals revealed that the crystals grown from aqueous solution have a higher percentage of transmission, thereby favourably affecting optical performance.

Item Type: Conference Paper This article copyright belongs to Elsevier A1. Solubility; A2. Growth from solutions; A2. Single-crystal growth; B2. Nonlinear optic materials Division of Physical & Mathematical Sciences > Physics 27 Feb 2008 19 Sep 2010 04:42 http://eprints.iisc.ernet.in/id/eprint/13098

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