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• W2023755762 abstract "We report an investigation of the nature of room-temperature ferromagnetism enhancement in Ce1−xCrxO2−δ nanoparticles (0.00≤x≤0.05), synthesized by a sol–gel-based method. Energy-dispersed X-ray spectrometry (EDS) analysis was used to estimate the dopant concentrations. The average crystallite sizes and particle size were estimated by X-ray diffraction (XRD) and transmission electron microscopy (TEM), respectively. Both studies showed a gradual decrease in the size of the crystallites and particles for x>0.01. Cr can substitute for Ce in the crystal lattice, and the Raman measurements indicated that structural defects in the samples increased as a function of the Cr content in the CeO2 crystal lattice. The surface topography, examined by scanning electron microscopy (SEM), showed that the undoped sample has a porous and loosely organized structure, whereas the Cr-doped samples exhibited a dense and compact structure. Magnetic measurements of the Ce1−xCrxO2−δ samples at 27 oC showed a maximum remanent magnetization value of 0.01 emu/g for x=0.05. The nature and enhancement of room-temperature ferromagnetism was interpreted by taking into account the exchange interaction between Cr3+ ions and oxygen vacancies in CeO2." @default.
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• W2023755762 date "2012-08-01" @default.
• W2023755762 modified "2023-10-18" @default.
• W2023755762 title "The effects of Cr-doping on the room temperature ferromagnetism of chemically synthesized CeO2−δ nanoparticles" @default.
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• W2023755762 doi "https://doi.org/10.1016/j.physb.2011.12.069" @default.
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