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Optical and magnetic properties of Mg2+ doped CeO2 nanoparticles

机译:Mg2 +掺杂CeO2纳米颗粒的光学和磁性性能

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摘要

Nanocrystalline MgxCe(1-x)O(2) (x = 0.01, 0.03, and 0.05) particles with near uniform size were synthesized by microwave refluxing method. The effects of Mg doping on the optical and magnetic properties of CeO2 are systematically studied. Particle size of all samples were demonstrated by XRD, HRTEM and Raman spectroscopy analyses. Mg doping effect on defect formation was investigated by Raman, UV-Vis and PL spectroscopy studies. Our results show that the increase of oxygen vacancies or defects was induced by Mg doping but not by particle size variation. In addition, a decrease of saturation magnetization was observed with increased Mg content. This can be due to the formation of Mg dopant complexes around oxygen vacancies which leads to formation of F2+ or F-0 centers and thereby destroying the long range ferromagnetic ordering.
机译:通过微波回流方法合成纳米晶MGXCE(1-X)O(2)(x = 0.01,0.03和0.05)颗粒,颗粒均由微波回流方法合成。 系统研究了MG掺杂对CEO2的光学和磁性的影响。 通过XRD,HRTEM和拉曼光谱分析来证明所有样品的粒度。 通过拉曼,UV-VIS和PL光谱研究研究了对缺陷形成的Mg掺杂效应。 我们的研究结果表明,Mg掺杂但不是通过粒度变化诱导氧空位或缺陷的增加。 此外,通过增加的Mg含量观察到饱和磁化强度的降低。 这可以是由于形成氧空位周围的Mg掺杂剂复合物,这导致形成F2 +或F-0中心,从而破坏了长距离的铁磁排序。

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  • 来源
    《RSC Advances》 |2016年第105期|共8页
  • 作者单位

    IIT BHU Dept Met Engn Varanasi 221005 Uttar Pradesh India;

    IIT BHU Dept Met Engn Varanasi 221005 Uttar Pradesh India;

    IIT BHU Dept Met Engn Varanasi 221005 Uttar Pradesh India;

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  • 正文语种 eng
  • 中图分类 化学;
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