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Single crystals of zinc sulfate doped L-alanine (LAZ) were grown by adopting the slow evaporation technique at room temperature. The crystal structure of LAZ was determined using single-crystal X-ray diffraction. The functional groups of LAZ were identified by FT-IR spectroscopy analysis. UV–Visible–NIR transmittance study was carried out, and the bandgap energy was found. A fluorescence study was performed to get the emission spectrum of the LAZ crystal. The Vickers microhardness test is used to determine the LAZ crystals mechanical behavior. Thermogravimetric and differential thermal analyses have also been studied to investigate the thermal property of the LAZ crystal. The efficiency of the title crystal's second harmonic generation (SHG) was investigated. The electrical properties were estimated by impedance study. [ABSTRACT FROM AUTHOR]

The crystal structure of zinc metal deviates from the ideal hexagonal close packing structure by a significantly increased axial ratio (c/a). The local atomic structure of zinc metal is investigated using the total scattering atomic pair distribution function (PDF) analysis based on X-ray powder diffraction data collected at ambient conditions. The X-ray total scattering PDF analysis confirms that the crystal structure of zinc can be described in terms of wurtzite structure, but with an anomalously atomic displacement parameters U 3 3 , indicating a significant displacement disorder along the c -axis. For the long r -range PDF refinements, the thermal motion of zinc shows a notable anisotropy as expressed by the ratio U 3 3 / U 1 1 of 2.5 at ambient conditions. This average distortion level along the c -axis, was not reflected locally for the features below 5.0 Å as it fits the high r region. Based on PDF refinements over different r -ranges, we measure an interesting increase of the U 3 3 value with decreasing the r -range of the refinement. This suggests that the local structure features in zinc metal differ from the average structure ones. [ABSTRACT FROM AUTHOR]

Zinc thiourea chloride (ZTC) crystals were crystallized by slow evaporation technique. The lattice parameters of the grown crystals were determined by angle dispersive X-ray powder diffraction technique (XRD) and the structure was confirmed. High pressure electrical resistivity study was carried out on this crystal and the results are reported here. [ABSTRACT FROM AUTHOR]