Abstract
Single crystals of pure and sodium iodide NaI-doped zinc tris thiourea sulphate (ZTS) were grown by slow evaporation technique at room temperature from aqueous solution. Powder XRD analysis of the grown crystals reveals orthorhombic structures with space group Pca21. The functional groups and modes of vibrational frequencies were recognized with FTIR spectral analysis. UV–Visible spectra indicate that the material has high optical transparency in the entire visible region. The hardness of the material studies reveal that the hardness number (Hv) increases with load for both pure and NaI-doped ZTS crystals. The thermal properties of the grown crystals were investigated by thermo-gravimetric and differential thermal analysis techniques (TGA/DTA).
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