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首页> 外文期刊>Physica, B. Condensed Matter >Influence of Fe:Co co-doping on the morphology, optical and magnetic properties of Cu1-(x+y)FexCoyO nanostructures prepared by a hydrothermal method
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Influence of Fe:Co co-doping on the morphology, optical and magnetic properties of Cu1-(x+y)FexCoyO nanostructures prepared by a hydrothermal method

机译:Fe:Co共掺杂对水热法制备Cu1-(X + Y)Fexcoyo纳米结构的形态学,光学和磁性的影响

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摘要

CuO and Cu1-(x+y)FexCoyO (x = 0.08-0, while x + y = 0.08) nanostructures (NSs) were successfully synthesized via a hydrothermal method. X-ray diffraction (XRD) analysis revealed a monoclinic phase of a crystalline CuO NS with space group C2/c. Varying Fe:Co co-doping concentrations significantly influenced the morphology, optical and magnetic properties of the obtained products. Scanning electron microscopy (SEM) revealed a microplate morphology of CuO NS with zigzag maple leaf-like edges that can be transformed into a brittle bar shape and finally to tiny submicron particles agglomerated in a parallel pipe shape. The absorption edge studied by ultraviolet-visible spectroscopy (UV-vis) displayed the red shift towards longer wavelengths with increased Co content. Vibrating sample magnetometry (VSM) results showed paramagnetic behavior of CuO NS and ferromagnetic behavior for the Cu1-(x+y)FexCoyO NSs samples. Ferromagnetism of Cu1-(x+y)FexCoyO NSs was discussed based on the F-center exchange (FCE) mechanism via oxygen vacancy defects.
机译:CuO和Cu1-(X + Y)Fexcoyo(x = 0.08-0,而X + Y = 0.08)通过水热法成功地合成纳米结构(NSS)。 X射线衍射(XRD)分析显示了具有空间组C2 / C的结晶CuO NS的单斜相。不同的Fe:共同掺杂浓度显着影响所得产物的形态,光学和磁性。扫描电子显微镜(SEM)揭示了Cuo NS的微孔板形态,其中Z字形枫叶状边缘可以转化为脆性条形,最后在平行管形状中聚集的微小亚微米颗粒。通过紫外 - 可见光谱(UV-VI)研究的吸收边缘显示红色移位朝向较长波长的升高,CO含量增加。振动样品磁体(VSM)结果表明CuO NS和Cu1-(X + Y)Fexcoyo NSS样品的CuO NS和铁磁性行为的顺磁性行为。通过氧空位缺陷基于F中心交换(FCE)机制讨论了Cu1-(X + Y)Fexcoyo NSS的铁磁性。

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