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首页> 外文期刊>Solid State Communications >Influence of annealing temperature on structural, optical and magnetic properties of Zn_(0.95)Cu_(0.02)Cr_(0.03)O powders
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Influence of annealing temperature on structural, optical and magnetic properties of Zn_(0.95)Cu_(0.02)Cr_(0.03)O powders

机译：Influence of annealing temperature on structural, optical and magnetic properties of Zn_(0.95)Cu_(0.02)Cr_(0.03)O powders

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Zn_(0.95)Cu_(0.02)Cr_(0.03)O powders have been synthesized by the solgel method and sintered in argon atmosphere under different temperatures. The structural, optical and magnetic properties of the powders were investigated by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), photoluminescence (PL) and vibrating sample magnetometer (VSM). The XRD results demonstrated that Cr and Cu ions are incorporated into ZnO successfully when annealing temperatures were 600 and 700 °C. But when the samples were annealed at 500 °C, the crystallinity of the samples was not very good. However, when the annealing temperature was increased to 800 °C, the secondary phase of Cu and ZnCr_2O_4 appeared in the samples. The PL spectra revealed that the position of the ultraviolet (UV) emission peak of the samples showed a blue shift and the green emission peak enhanced significantly with the annealing temperature increasing from 600 to 700 °C. Magnetic measurements indicated that the room temperature ferromagnetism of Zn_(0.95)Cu_(0.02)Cr_(0.03)O was intrinsic in nature. In addition, the saturation magnetization (Ms) increased from 0.0078 to 0.0088 emu/g with the annealing temperature increased from 600 to 700 °C

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