Single crystals of aluminium ammonium sulphate dodecahydrate have been grown by slow evaporation solution growth technique at room temperature. The grown crystals were subjected to X-ray diffraction analysis in order to find the lattice parameter and crystal structure. Structural analysis by single crystal XRD analysis reveals the crystal belongs to cubic system. The cell parameters of the crystal is a = b = c = 24.56 A o , = = = 90 o. The X-ray diffraction reveals the crystalline perfection of the grown crystal. An increase in dielectric constant at all frequencies is observed. The grown crystal is characterized by FTIR, FT-Raman, XRD and Dielectric studies. Optical Absorption studies reveal very low absorption in the entire visible region. The functional groups have been determined by FTIR and FT-Raman analysis. Dielectric constant at various frequencies is observed. The UV spectra reveal the material/crystal has band gap of 5.87eV.
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