Abstract
Niobium nitride (NbN) nanoparticles have successfully been synthesized at elevated temperatures (700 and 800 °C) in a single step from niobium penta-oxide (Nb2O5), magnesium (Mg) and thiourea ((NH2)2CS) in a sealed autoclave. The synthesis temperature and holding time have been optimized to obtain single phase NbN. The phase determination and morphological features of synthesized samples have been analyzed by X-ray diffraction (XRD), electron microscopic (TEM) technique. Williamson-Hall analysis has also been done to observe the effects of synthesis parameters (temperature and holding time) on lattice distortion. Moreover, TEM results revealed the presence of oxygen centers in the form of NbCpNq or NbOxNy or NbOz inside NbN nanoparticles which was also supported by TEM-EDS and X-ray photoelectron spectroscopy (XPS) results.
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