Optical, Thermal and Electrical Studies on L-Malic Acid Doped ADP Single Crystals for Non-Linear Optical Application

Ammonium Dihydrogen Phosphate (ADP) is one of the most popular crystals used for nonlinear optical (NLO) applications. ADP crystal is of more appeal due to its piezo-electric property. ADP crystals attract more interest because of their unique nonlinear optical, dielectric and anti-ferroelectric properties. The L-Malic acid doped ADP (LMADP) single crystals were grown by slow evaporation method at room temperature. The Crystalline nature of the grown LMADP crystal has been studied by powder XRD analysis. A Fourier transform infrared (FT-IR) study confirms the functional groups of the crystals. The second harmonic generation efficiency of the crystals was determined by NLO studies. The UV-visible study confirms the wide optical transmittance window for the doped crystals imperative for optoelectronics applications. TG/DTA analyses were carried out to characterize the melting behavior and stability of the title compound. The electrical properties of the grown crystal have been analyzed by dielectric constant and dielectric loss with frequency.