AbstractThe tunable room-temperature ferromagnetism (RTFM) of ZnO nanoparticles through Dy doping were fabricated through'/> Achieving room temperature ferromagnetism in ZnO nanoparticles via Dy doping
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Achieving room temperature ferromagnetism in ZnO nanoparticles via Dy doping

机译:通过Dy掺杂实现ZnO纳米颗粒中的室温铁磁性

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摘要

AbstractThe tunable room-temperature ferromagnetism (RTFM) of ZnO nanoparticles through Dy doping were fabricated through a simple co-precipitation method for spintronic device applications. The synthesized samples were analyzed by studying their structural, morphological, optical, chemical, and magnetic properties. X-ray diffraction, selected area electron diffraction, and X-ray photoelectron spectroscopy results display that the Dy3+have successfully entered for a few of the Zn2+as a substitute in the ZnO crystal lattice without altering their hexagonal structure. Morphology studies of the suspensions consist of monodisperse and slightly hexagonal shaped nanoparticles. The tunable optical band gap was observed in the ZnO samples via Dy doping, confirmed by diffuse reflectance spectroscopy studies. Declaration of RTFM of the ZnO:Dy has been established with the noticed hysteresis in M–H loops and these studies indicate that the saturation magnetization of the ZnO sample as a function of Dy content. Amalgamating with the above results, it is suggested that, the observed RTFM in the ZnO:Dy nanoparticles may be interpreted by the contribution of the magnetic moments from the unpaired 4felectrons of Dy3+ions.
机译: 摘要 通过Dy掺杂通过简单的协同制备ZnO纳米粒子的可调室温铁磁(RTFM)。自旋电子器件应用的沉淀方法。通过研究合成的样品的结构,形态,光学,化学和磁性能对其进行分析。 X射线衍射,选择区电子衍射和X射线光电子能谱分析结果表明,Dy 3 + 已成功地作为部分Zn 2 + 输入。替代ZnO晶格而不改变其六边形结构。悬浮液的形态研究由单分散和略呈六角形的纳米颗粒组成。通过Dy掺杂在ZnO样品中观察到了可调的光学带隙,这已通过漫反射光谱研究得到了证实。 ZnO:Dy的RTFM声明已经建立,并且在M–H回路中具有明显的磁滞现象,这些研究表明ZnO样品的饱和磁化强度与Dy含量有关。综合以上结果,可以认为,ZnO:Dy纳米粒子中观察到的RTFM可能是由Dy的不成对4 f 电子的磁矩贡献所解释的。 3 + ions。

著录项

  • 来源
    《Journal of materials science》 |2018年第3期|2316-2321|共6页
  • 作者单位

    Department of Electronic Engineering, Yeungnam University,Department of Physics, Sri Venkateswara University;

    Department of Electronic Engineering, Yeungnam University;

    Department of Electronic Engineering, Yeungnam University;

    Department of Physics, Siddartha Educational Academy Group of Institutions;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

  • 入库时间 2022-08-17 13:43:26

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