Growth and Characterization of Pure and Neem Leaves Extract Doped Potassium Dihydrogen Phosphate (KDP) Crystal
R.Kayalvizhi1, G.Meenakshi2

1R.Kayalvizhi, Department of Physics, Karpagam University, Coimbatore (Tamil Nadu), India.
2G.Meenakshi, Department of Physics, KMCPGS, (Puducherry), India.
Manuscript received on 10 July 2013 | Revised Manuscript received on 18 July 2013 | Manuscript Published on 30 July 2013 | PP: 73-77 | Volume-3 Issue-2, July 2013 | Retrieval Number: B1030073213/13©BEIESP
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Abstract: Potassium dihydrogen phosphate (KDP) crystal is an interesting non linear optical inorganic material. In this present work, KDP crystal and neem leaves extract doped KDP crystal has been grown by slow evaporation aqueous solution growth technique. The grown crystals have been investigated through various techniques viz. Fourier Transform Infrared Spectroscopy has been used for spectral analysis of grown crystals. The grown crystal has been subjected to X-ray diffraction for structural analysis. Using Energy Dispersive X-ray Spectroscopy, presence of element with weight percentage has been calculated. Nonlinear optic measurement has been used to find the SHG efficiency. Increase in KDP crystal thermal stability by an organic additive of neem leaves extract has been determined by Thermo-Gravimetric Analysis (TGA) and Differential Thermal Analysis (DTA). The conductivity and capacitance of KDP crystal and neem leaves extract doped KDP has been analyzed. Using Vicker’s micro hardness test the mechanical property of KDP crystal and neem leaves extract doped KDP has been studied.
Keywords: KDP-Potassium Dihydrogen Phosphate, Slow Evaporation Technique, Organic Impurity, NLO.

Scope of the Article: Bio-Science and Bio-Technology