Abstract :
Transition metal ions doped CdO/ZnS nanocomposites have been synthesized using a simple wet chemical
method. The prepared samples are characterized by powder XRD, SEM, Optical, EPR, PL, VSM and FT-IR
techniques. From XRD the prepared nanocomposites are comprised for cubic phase of both CdO and ZnS in a close
contact with each other. SEM images show nanoclusters. Optical absorption and EPR spectra of TM ions doped
nanocomposites exhibited the characteristic absorption bands and resonance signals of TM ions. Distorted octahedral
site symmetry is observed for all TM ions doped CdO/ZnS nanocomposites. Tetragonal and rhombical distortion in
octahedral site is observed for VO2+ and Cu2+ ions doped CdO/ZnS nanocomposites. The PL spectra of all the dopants
exhibit various emission bands correspond to UV and visible regions. The corresponding CIE coordinates are also
calculated. Magnetometric measurements show all TM ions doped CdO/ZnS nanocomposites exhibits
ferromagnetism at room temperature. FT-IR spectra exhibited the fundamental modes of vibrations of CdO, ZnS and
other functional groups.
Keyword :
Nanocomposites, core-shell, transition metal ions, wet chemical method, XRD and PL.