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A study of structural, optical and magnetic properties of Cr, Ce co-doping in ZnO diluted magnetic semiconductors |
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| Authors: | Hui Lian Liu Lian Hua Fei Hong Bo Liu Jing Hai Yang Xin Jin Ming Gao Yang Liu Xin Cheng Xu Zhang |
| Affiliation: | 1. Institute of Condensed State Physics, Jilin Normal University, Siping, 136000, People’s Republic of China 2. Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Siping, 136000, Jilin, China 3. School of Mathematics, Jilin Normal University, Siping, 136000, People’s Republic of China |
| Abstract: | We present the structural, optical and magnetic properties of pure ZnO, Zn0.97Cr0.03O and Zn0.96Cr0.03Ce0.01O samples, the samples were synthesized by sol–gel method. The microstructures, optical and magnetic properties of samples were investigated by X-ray diffraction (XRD), transmission electron microscope , X-ray photoelectron spectroscopy (XPS), photoluminescence spectroscopy (PL), Raman spectroscopy and vibrating sample magnetometer. XRD and XPS data confirmed the formation of a single phase wurtzite type ZnO structure for all the samples. PL measurements revealed that all the three samples had an UV emission and a defect emission, and the Ce ions doping induced a red shift in the UV emission and an increase in the defect emission. Zn0.97Cr0.03O and Zn0.96Cr0.03Ce0.01O samples showed the obvious hysteresis loops at room temperature and the saturation magnetization (Ms) increases with incorporating of Ce. |
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