Structural and optical properties of Nd doped LaPO4
In this study, effect of Nd doping, as a dopant material on the structural, optical and electronic properties of lanthanum monazite structure has been studied. Pure and Nd:LaPO4 powders with varying Nd concentrations were prepared via conventional high-temperature solid-state reaction method. Compos...
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Veröffentlicht in: | Journal of alloys and compounds 2022-12, Vol.925, p.166772, Article 166772 |
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Hauptverfasser: | , , , , , , , , , |
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Sprache: | eng |
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Zusammenfassung: | In this study, effect of Nd doping, as a dopant material on the structural, optical and electronic properties of lanthanum monazite structure has been studied. Pure and Nd:LaPO4 powders with varying Nd concentrations were prepared via conventional high-temperature solid-state reaction method. Compositional information obtained using Energy dispersive X-ray spectroscopy showed that within the detection limit, no impurities were present in the samples. Oxidation states of the elements were confirmed from X-ray photoelectron spectroscopy (La and Nd) and X-ray absorption near edge structure studies (La). X-ray diffraction showed the formation of monoclinic crystal structure without any phase impurity. Fourier transform infra-red spectroscopic measurements confirmed the substitution of Nd in LaPO4 matrix. We also report the first ever local structure analysis using Extended X-ray absorption fine structure which showed that the Nd atoms have successfully substituted La atoms in LaPO4 matrix. The bandgaps were obtained from Diffuse reflectance UV-Visible spectroscopy.
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•Nd doping effect on structural, optical, electronic property of LaPO4 was studied.•XRD showed pure monoclinic crystal structure without any phase impurity.•First ever report on local structure by EXAFS showed La substitution by Nd atoms.•Oxidation states of elements were confirmed from XPS and XANES.•FTIR revealed presence of PO4 tetrahedra without any other chemical impurity. |
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ISSN: | 0925-8388 1873-4669 |
DOI: | 10.1016/j.jallcom.2022.166772 |