Antimony Sulphoiodide is most widely studied compound in group V-VI-VII family due to its large number of properties. Varoius methods of synthesis have been reported. We are the first to report synthesis of shiny SbSI crystals by the Chemical Vapor Deposition (CVD) technique using powder of Antimony, Sulphur and Iodine as the starting material. Needle shaped thin crystals of SbSI were found grown vertically on the walls of the quartz tube. Characterizations of the sample were done using different techniques such as powder X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDAX). The charcteristcs peaks in
Needle shaped SbTeI crystals were obtained by solid state reaction. Electrical resistance was measured in the temperature range of 4 K to 550 K. SbTeI shows a metallic behavior from 4 K to 300 K, and at higher temperature (>300 K), it shows semiconducting behavior. Unlike SbSI, this material shows almost zero resistance around 550 K. It shows a piezoelectric behavior with a capacitance of 717 pF and its carrier density and nobilities are found to be 2.12 × 1016 cm−3 and 1.01 cm2/(V·s), respectively. Crystals of SbTeI are characterized by XRD, SEM, and Raman analysis. Electrical activation energy is found to be 0.52 eV. It is suggested that this material may be studied for its application as a superconductor with Tc higher than room temperature.
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