Effect on Doping of EDTA on Structural, Optical and Mechanical Properties of KDP Crystal

Abstract

Abstract Single crystal of Potassium Dihydrogen Orthophosphate (KDP, KH2PO4) pure and doped with EDTA (Ethylenediaminetetraacetic acid, [CH2N (CH2CO2H)2]2) have been successfully grown by slow evaporation method at room temperature with deionized water as a solvent with a aim to improve the properties of KDP crystal. The concentration of EDTA was 0.1mol%. The Energy Dispersive X-ray Analysis (EDAX) confirms the presence of EDTA in grown crystals. A tetragonal structure of crystals was confirmed and the value of lattice parameter was calculated by X–Ray diffraction (XRD) analysis. Optical energy band gap was determined by UV-VIS Spectroscopy. Raman Spectroscopy studies structural mode of bond in pure and EDTA doped KDP crystal. Microhardness of the crystals was measured with different dwell time and different load using Vicker microhardness tester.