Structural, Optical and Magnetic Properties of Cu-Doped ZnO Nanoparticles by Co-Precipitation Method
Journal article
Fabbiyola, S, Kennedy, L J, JudithVijaya, J, Bououdina, M and Dunn, S (2016). Structural, Optical and Magnetic Properties of Cu-Doped ZnO Nanoparticles by Co-Precipitation Method. Journal of Nanoscience and Nanotechnology. 16 (9), pp. 9722-9730. https://doi.org/10.1166/jnn.2016.12094
| Authors | Fabbiyola, S, Kennedy, L J, JudithVijaya, J, Bououdina, M and Dunn, S |
|---|---|
| Abstract | Zn1-xCuxO (0 ≤ x ≤ 0.2) nanoparticles were prepared by co-precipitation method followed by drying at 200ºC. A non-ionic surfactant Tween-80 which was not reported in earlier studies, was used during preparation process. X-ray diffraction analysis showed the formation of wurtzite ZnO phase nanostructures. The Rietveld analysis showed the appearance of impurity phase (CuO), when Cu2+ was doped with ZnO (x = 0.05 to 0.2). Morphological observations using scanning electron microscopy show the formation of nanoparticles with remarkable morphologies. Photoluminescence spectra revealed emission bands in both UV and visible regions due to the defect centres acting as trap levels. Diffuse reflectance spectroscopy (DRS) showed a decreasing trend in the value of the band gap with increasing Cu2+ doping for lower concentration (x = 0 to 0.1) and then increasing trend for higher concentration of Cu2+ doping. (x = 0.1 to 0.2). The elemental composition of Zn, Cu and O was quantitatively obtained from EDAX analysis where the chemical composition was close to the starting stoichiometries. Magnetisation-Field (M-H) hysteresis curves revealed the appearance of ferromagnetic behaviour, where the magnetic characteristics such as coercivity and saturation magnetization values , were found to be sensitive to Cu2+ doping level. |
| Year | 2016 |
| Journal | Journal of Nanoscience and Nanotechnology |
| Journal citation | 16 (9), pp. 9722-9730 |
| Publisher | American Scientific Publishers |
| Digital Object Identifier (DOI) | https://doi.org/10.1166/jnn.2016.12094 |
| Publication dates | |
| 01 Sep 2016 | |
| Publication process dates | |
| Deposited | 16 Jan 2019 |
| Accepted | 01 Sep 2016 |
| Accepted author manuscript | License File Access Level Open |
| Additional information | Due to copyright restrictions we are unable to share this article openly. |
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