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Structural, Optical, and Magnetic Properties of Nd-Doped CeO2 Nanoparticles Codoped with Transition Metal Elements (Cu, Zn, Cr).

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Title: Structural, Optical, and Magnetic Properties of Nd-Doped CeO2 Nanoparticles Codoped with Transition Metal Elements (Cu, Zn, Cr).
Authors: Bharathi, R. Niruban1, Sankar, S.1
Source: Journal of Superconductivity & Novel Magnetism. Aug2018, Vol. 31 Issue 8, p2603-2615. 13p.
Subjects: Cerium oxides, Vacancy-dislocation interactions, Cold fusion, Ferromagnetism, Raman spectroscopy
Abstract: In the present work, pure CeO2, neodymium-doped CeO2, and neodymium and transition metal element (Cu, Zn, Cr)-codoped CeO2 nanoparticles were synthesized by an auto-combustion method and annealed at 700 ∘C. The X-ray diffraction (XRD) studies revealed that all the samples exhibited a single-phase cubic fluorite structure with the incorporation of respective dopant ions into the CeO2 lattice. The scanning electron microscopy (SEM) images displayed the prepared nanoparticles which had an irregular flaky structure with large agglomerations. The Fourier transform Raman (FT-Raman) spectroscopy analysis revealed the increased oxygen vacancy defects in CeO2 host after doping and codoping with neodymium and transition metal elements. Ultraviolet-diffuse reflectance spectroscopy (UV-DRS) studies revealed the decrease in bandgap values in doped and codoped samples compared to pure CeO2 sample. The Fourier transform infrared spectroscopy (FTIR) studies revealed the presence of functional groups in the prepared samples. Photoluminescence (PL) spectroscopy analysis reported the decreased luminescence intensities of Nd-doped and neodymium and transition metal-codoped CeO2 nanoparticles. The vibrating sample magnetometer (VSM) results depicted that all the samples exhibited room-temperature ferromagnetism. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Superconductivity & Novel Magnetism is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Structural, Optical, and Magnetic Properties of Nd-Doped CeO<subscript>2</subscript> Nanoparticles Codoped with Transition Metal Elements (Cu, Zn, Cr).
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  Data: <searchLink fieldCode="DE" term="%22Cerium+oxides%22">Cerium oxides</searchLink><br /><searchLink fieldCode="DE" term="%22Vacancy-dislocation+interactions%22">Vacancy-dislocation interactions</searchLink><br /><searchLink fieldCode="DE" term="%22Cold+fusion%22">Cold fusion</searchLink><br /><searchLink fieldCode="DE" term="%22Ferromagnetism%22">Ferromagnetism</searchLink><br /><searchLink fieldCode="DE" term="%22Raman+spectroscopy%22">Raman spectroscopy</searchLink>
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  Data: In the present work, pure CeO2, neodymium-doped CeO2, and neodymium and transition metal element (Cu, Zn, Cr)-codoped CeO2 nanoparticles were synthesized by an auto-combustion method and annealed at 700 ∘C. The X-ray diffraction (XRD) studies revealed that all the samples exhibited a single-phase cubic fluorite structure with the incorporation of respective dopant ions into the CeO2 lattice. The scanning electron microscopy (SEM) images displayed the prepared nanoparticles which had an irregular flaky structure with large agglomerations. The Fourier transform Raman (FT-Raman) spectroscopy analysis revealed the increased oxygen vacancy defects in CeO2 host after doping and codoping with neodymium and transition metal elements. Ultraviolet-diffuse reflectance spectroscopy (UV-DRS) studies revealed the decrease in bandgap values in doped and codoped samples compared to pure CeO2 sample. The Fourier transform infrared spectroscopy (FTIR) studies revealed the presence of functional groups in the prepared samples. Photoluminescence (PL) spectroscopy analysis reported the decreased luminescence intensities of Nd-doped and neodymium and transition metal-codoped CeO2 nanoparticles. The vibrating sample magnetometer (VSM) results depicted that all the samples exhibited room-temperature ferromagnetism. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of Journal of Superconductivity & Novel Magnetism is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s10948-017-4501-y
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        Text: English
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      – SubjectFull: Cerium oxides
        Type: general
      – SubjectFull: Vacancy-dislocation interactions
        Type: general
      – SubjectFull: Cold fusion
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      – SubjectFull: Ferromagnetism
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      – SubjectFull: Raman spectroscopy
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      – TitleFull: Structural, Optical, and Magnetic Properties of Nd-Doped CeO2 Nanoparticles Codoped with Transition Metal Elements (Cu, Zn, Cr).
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              Text: Aug2018
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              Y: 2018
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