Influence of Co ions doping in structural, vibrational, optical and magnetic properties of ZnO nanoparticles
Journal
Journal of Materials Science: Materials in Electronics
Journal Volume
27
Pages
8580-8589
Date Issued
2016
Author(s)
Abstract
In this present work, the Co2+ ions doping effect on the structural, vibrational, morphological, optical and magnetic behavior of ZnO nanoparticles (NPs) are reported. The Zn1−xCoxO (with 0 ≤ x ≤ 0.05) samples were prepared by co-precipitation method. The single crystalline phase was identified as the Wurtizite structure and doping effect of prepared NPs was confirmed by XRD. In addition, a small peak shifts and variation of peak intensity have been found on Co2+ doping increases. Further, the prepared samples were characterized by Raman spectra, photoluminescence (PL), UV–Drs, FTIR, XPS spectroscopic measurements. The structural change and presence of defects were confirmed by Raman spectra and PL analysis. The optical properties exhibit the incorporation of dopant ions and their effect on the band gap subsequently. The XPS analysis confirmed the valence state of the dopant ions in the ZnO matrix. The observed room temperature ferromagnetism and the non-monotonic variation in the magnetic properties were discussed based on the presence of intrinsic defects in the prepared samples.
SDGs
Publisher
Springer New York LLC
Type
journal article