Publications by authors named "Poovaragan S"
Different mole ratios of (8:2, 6:4, 4:6 and 2:8) iron tungstate-tungsten trioxide (FeWO₄-WO₃) composite nanoparticles were synthesized by solid state method. The synthesized composite nanoparticles were characterized by powder X-ray diffraction analysis (XRD), field-emission scanning electron microscopy (FE-SEM) with energy dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM) and vibrating sample magnetometer (VSM) studies. The crystalline nature and particle size of the samples were characterized by powder X-ray diffraction analysis (XRD).
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- Nanoparticles of Li, Mg, and Sr doped and undoped zinc oxide were synthesized using a simple precipitation method, and their structural, optical, and magnetic properties were analyzed through various techniques such as XRD, SEM, and FTIR.
- The XRD results confirmed the hexagonal wurtzite structure of all samples, while SEM images showed particle sizes between 10 nm and 50 nm, indicating successful doping.
- Additionally, the optical analysis revealed changes in bandgap and luminescence due to doping, with pure ZnO being paramagnetic and doped ZnO exhibiting ferromagnetic properties, alongside assessing the photocatalytic activity of the samples.
Nanoparticles of tin oxide (SnO2) powders were prepared by co-precipitation method at 500 °C, 700 °C and 900 °C temperature. The sintered SnO2 nanoparticles, structural, optical, magnetic, morphological properties and microbial activity have been studied. XRD studies reveals that sintered powder which exhibits tetragonal crystal structure and both crystallinity as well as crystal size increase with increase in temperature.
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