Metamaterial Mn-doped PbS nanoparticles: Synthesis, size-strain line-broadening analysis and Kramers-Kronig study

Pure and Pb1−xMnxS (x = 0%, 2.5%, 5% and 10%) nanoparticles were synthesized by precipitation method. The as-synthesized nanopowders are characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared (FT-IR) spectra and reflectance spectrum in the wavelength...

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Bibliographic Details
Published in:Ceramics international 2017-10, Vol.43 (15), p.12420-12426
Main Authors: Ramezanpour, B., Chenari, Hossein Mahmoudi, Kangarlou, H.
Format: Article
Language:English
Subjects:
Kramers-Kronig
Metamaterials
Mn doping
Nanoparticles
PbS
Size-strain
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Summary:Pure and Pb1−xMnxS (x = 0%, 2.5%, 5% and 10%) nanoparticles were synthesized by precipitation method. The as-synthesized nanopowders are characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared (FT-IR) spectra and reflectance spectrum in the wavelength range of 200–1200nm. X-ray diffraction studies confirmed that pure and Mn-doped PbS have a single phase nature with cubic structure. From the X-ray peak broadening analysis, the microstructure parameters of pure and Mn-doped PbS nanopowders are calculated by Williamson-Hall (W-H) analysis assuming uniform and anisotropic deformation model. Also, the effect of Mn doping on the optical properties of PbS nanoparticles has been studied. Optical observations show the production of metamaterial nanoparticles with many striking features. In fact, disorientation of PbS crystal structure in low percentage of doping is noticeable. What is more, by increasing the dosage of doped impurity, the emergence of new arrangement and symmetry is feasible.
ISSN:0272-8842
1873-3956
DOI:10.1016/j.ceramint.2017.06.109