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Synthesis and properties of (Fe, Ni)-doped zinc sulfide nanopowders

机译:(Fe,Ni) - 硫化锌纳米粉粉的合成与性质

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摘要

Pure and (Fe, Ni)-doped ZnS nanopowders have been successfully synthesized by chemical co-precipitation method using Poly Vinyl Pyrrolidone (PVP) as capping agent. Powder X-ray diffraction (XRD) studies reveal that the synthesized powders are in cubic blended structure. The average crystalline size of pure and doped ZnS nanopowder conform around 2-3 nm. In the investigations, Ni is kept constant at 3 mol% and Fe is increased from 1 to 5 mol%. Transition electron microscopy (TEM) is also used to investigate the average size of the nanopowders. TEM results are reasonably in good agreement. SEM micrographs of the (Fe, Ni)-doped nanopowders result in agglomeration with spherical in shape. The EDAX spectra show the chemical composition of dopants is uniform in ZnS. Optical absorption spectra show the absorption edge at 310 nm. Photoluminescence (PL) studies are conducted with excitation wavelength of 306 nm. Pure ZnS exhibits sharp emission peaks at 438 nm, 450 nm and 466 nm. (Fe, Ni)-doped ZnS samples also exhibit the sharp emission peaks at 450 nm and 467 nm with decreasing intensity. The magnetic measurements reveal that 5 mol% Fe- and 3 mol% Ni-doped ZnS nanopowders exhibit a weak ferromagnetic behavior.
机译:纯的和(Fe,Ni) - 通过使用聚乙烯基吡咯烷酮(PVP)作为封端剂,通过化学共沉淀法成功地合成了ZnS纳米粉。粉末X射线衍射(XRD)研究表明,合成的粉末是立方混合结构。纯和掺杂ZnS纳米粉末的平均结晶尺寸符合2-3nm。在调查中,Ni保持恒定在3摩尔%,Fe从1-5摩尔%增加。过渡电子显微镜(TEM)还用于研究纳米粉末的平均尺寸。 TEM结果与良好的一致性合理。 (Fe,Ni)的SEM显微照片 - 掺杂的纳米粉末导致具有球形的聚集形状。 edax光谱显示掺杂剂的化学成分在ZnS中是均匀的。光学吸收光谱显示在310nm处的吸收边缘。光致发光(PL)研究以306nm的激发波长进行。纯ZNS在438nm,450nm和466nm处表现出尖锐的发射峰。 (Fe,Ni) - 掺杂的ZnS样品还具有450nm和467nm的尖锐发射峰,其强度降低。磁性测量揭示了5mol%Fe-和3摩尔%的Ni掺杂的ZnS纳米粉末表现出弱铁磁性行为。

著录项

  • 来源
    《Journal of materials science》 |2020年第19期|16150-16159|共10页
  • 作者单位

    Department of Physics Annamacharya Institute of Technology & Sciences (Autonomous). Rajampet A.P 516126 India;

    Department of Physics Sri Venkateswara University Tirupati A.P 517502 India;

    Department of Physics Sri Venkateswara University Tirupati A.P 517502 India;

  • 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
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