Good optical quality single crystal of urea succinic acid (USA) was grown by slow solvent evaporation technique. The grown crystal was characterized by X-ray diffraction (XRD), Fourier Transform Infra-red (FTIR), thermal analysis (TG-DTA), UV absorption and dielectric studies. The dielectric constant and dielectric loss of the crystal was studied as function of frequency and the results are discussed. The optical absorption studies indicate that for the sample, optical transparency window is quite wide making it suitable for NLO applications.
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