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Structural characterization, optical and magnetic properties of Ni-doped CdO dilute magnetic semiconductor nanoparticles

机译：掺Ni的CdO稀磁性半导体纳米粒子的结构表征，光学和磁性

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摘要

A simple and modified solvothermal method using oxalate precursor, used to synthesize Cd_(1-x)Ni_xO (x = 0.047, 0.102, and 0.163) nanoparticles and their phase structure, morphology, optical and magnetic properties, have been investigated. X-ray diffraction studies revealed that as-prepared Ni-doped CdO solid solutions are highly crystalline and stabilized in a monophasic cubic CdO structure. X-ray diffraction and ICP-MS studies confirmed the incorporation of Ni~(2+) in a CdO matrix. The average grain size was found to be 30, 15, and 11 nm, respectively, using transmission electron microscopic studies. High surface area in the range of 118-143 m~2/g has been achieved for these solid solutions using the multipoint BET method, which increases on increasing Ni concentration in Cd lattice site. The optical band gap of these solid solutions shows red shift to the undoped CdO. Ni-doped CdO nanoparticles exhibit co-existence of paramagnetism and ferromagnetism.
机译：研究了一种使用草酸盐前体的简单且改进的溶剂热方法，该方法用于合成Cd_（1-x）Ni_xO（x = 0.047、0.102和0.163）纳米粒子及其相结构，形态，光学和磁性。 X射线衍射研究表明，制得的掺Ni的CdO固溶体具有高度结晶性，并稳定在单相立方CdO结构中。 X射线衍射和ICP-MS研究证实了Ni〜（2+）在CdO基体中的结合。使用透射电子显微镜研究发现平均晶粒尺寸分别为30、15和11nm。使用多点BET方法对这些固溶体实现了118-143 m〜2 / g的高表面积，这随着Cd晶格位置中Ni浓度的增加而增加。这些固溶体的光学带隙显示出红移到未掺杂的CdO。镍掺杂的CdO纳米粒子表现出顺磁性和铁磁性的共存。

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  • 来源
    《Journal of Materials Research》 |2013年第9期|1245-1253|共9页
  • 作者

    Tokeer Ahmad; Sarvari Khatoon; Kelsey Coolahan; Samuel E. Lofland;

  • 作者单位

    Department of Chemistry, Nanochemistry Laboratory, Jamia Millia Islamia, New Delhi-110025, India;

    Department of Chemistry, Nanochemistry Laboratory, Jamia Millia Islamia, New Delhi-110025, India;

    Department of Physics and Astronomy, Rowan University, Glassboro, New Jersey 08028;

    Department of Physics and Astronomy, Rowan University, Glassboro, New Jersey 08028;

  • 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);
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