Abstract
Surfactant free ZnO and Cu doped ZnO nanorods were synthesized by hydrothermal method. The formation of ZnO:Cu nanorods were confirmed by scanning electron microscopy, X-ray diffraction and Raman analysis. Diffuse reflectance spectroscopy results shows that band gap of ZnO nanorods shifts to red with increase of Cu content. The orange-red photoluminescent emission from ZnO nanorods originates from the oxygen vacancy or ZnO interstitial related defects. ZnO:Cu nanorods showed strong ferromagnetic behavior, however at higher doping percentage of Cu the ferromagnetic behavior was suppressed and paramagnetic nature was enhanced. The presence of non-polar E high2 and E low2 Raman modes in nanorods indicates that Cu doping didn’t change the wurtzite structure of ZnO.
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Acknowledgments
This work was supported by Department of Science and Technology, Government of India under Nanoscience and Technology Initiative program. One of the authors (A.A.) thanks University Grant Commission for the award of a research fellowship in science for meritorious students scheme.
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Aravind, A., Jayaraj, M.K., Kumar, M. et al. Optical and magnetic properties of copper doped ZnO nanorods prepared by hydrothermal method. J Mater Sci: Mater Electron 24, 106–112 (2013). https://doi.org/10.1007/s10854-012-0911-6
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DOI: https://doi.org/10.1007/s10854-012-0911-6