Signature of room temperature ferromagnetism in Mn doped CeO2 nanoparticles

Kumar, Shalendra; Anwar, M. S.; Choi, Heekyu; Chung, Hanshik; Koo, Bon Heun

doi:10.1016/j.materresbull.2012.04.136

Cited by 29 publications

(9 citation statements)

References 21 publications

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“…redox couples. Consequently, the Mn 0.07 Ce 0.93 O 2 sample may exhibit an excellent catalytic performance at lowest temperature as a result of highest redox properties, which is also supported by the reports [17,18].…”

Section: Redox Propertiessupporting

confidence: 70%

“…This is conventionally described as strong metal-substrate interaction [9,14]. Currently, a significant interest has been exhibited in achieving magnetic functionality in CeO 2 nanoparticles [17,18]. Transition-metal-doped CeO 2 has been investigated as a promising dilute magnetic semiconductor for implementing spintronic device concepts, and progress has been achieved in the fabrication of spintronic devices [9,14].…”

Section: Introductionmentioning

confidence: 99%

“…Transition-metal-doped CeO 2 has been investigated as a promising dilute magnetic semiconductor for implementing spintronic device concepts, and progress has been achieved in the fabrication of spintronic devices [9,14]. So far, for the Mn-doped CeO 2 nanocomposite, there have been few reports focused on its effective reaction characteristics [9,14,17,18]. Therefore, further study on the redox properties of the Mn-doped CeO 2 nanoparticles is necessary for academic and practical interests.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Synthesis, Structural and Optical Properties of Mn-Doped Ceria Nanoparticles: A Promising Catalytic Material

Ansari

Labis

Alam

et al. 2016

Acta Metall. Sin. (Engl. Lett.)

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The structure, the morphology and the thermal, optical and the surface properties of nanocrystalline CeO 2 doped with Mn have been studied by X-ray diffraction (XRD), field-emission transmission electron microscopy (FE-TEM), energy-dispersive X-ray analysis, thermogravimetric analysis, UV-Vis absorption spectroscopy and Fourier transform infrared spectroscopy. The XRD results confirmed the successful incorporation of Mn into the CeO 2 lattice through the formation of nanoscale face-centered cubic solid solution. The FE-TEM observations supported the nanocrystalline nature of the solid solutions. The presence of structural defects and their role on the band gap have been discussed on the basis of absorption spectral studies. The structural differences correlate with results from temperature-programmed reaction (TPR) experiments with H 2 consumption. The TPR measurements showed an enhanced bulk reduction at much lower temperatures, indicating increased oxygen mobility in the samples, which enable to enhanced oxygen diffusion at lower temperatures.

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Section: Redox Propertiessupporting

confidence: 70%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Synthesis, Structural and Optical Properties of Mn-Doped Ceria Nanoparticles: A Promising Catalytic Material

Ansari

Labis

Alam

et al. 2016

Acta Metall. Sin. (Engl. Lett.)

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“…The XRD patterns of Ce 1−x Fe x O 2−δ , (0 ≤ x ≤20) NPs, synthesized using the coprecipitation method, are highlighted in Figure 1a. The XRD pattern of Fe-doped CeO 2 nanoparticles was analysed by means of a Rietveld refinement process via FullProf openaccess program [2]. The pattern with solid black spheres highlights the experimentally observed cure, and the red line superimposed onto the experimental curve shows the calculated spectra.…”

Section: Resultsmentioning

confidence: 99%

“…Cerium is a rare earth element of the lanthanide series which is found in abundant amounts in the Earth's crust. It exists in dual oxidation states-Ce +3 and Ce +4 [1][2][3]. Cerium dioxide (CeO 2 ) has attracted significant attention due to diverse structural, optical, magnetic, and antimicrobial properties in a wide range of applications in different fields [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Structural, Optical, Electrical and Antibacterial Properties of Fe-Doped CeO2 Nanoparticles

et al. 2021

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This paper reports the structural, optical and antimicrobial study of Ce1−xFexO2−δ (0≤ x ≤20) nanoparticles (NPs) synthesized using a microwave-assisted hydrothermal method. The XRD pattern analysed using Rietveld refinement method clearly infers that all the samples exhibit single phase nature and exclude the possibility of an impurity phase. The lattice parameters and unit cell volume were found to decrease with an increase in Fe-doping content in CeO2 nanoparticles. The crystalline size determined using XRD pattern and TEM micrographs was found to decrease with Fe doping in CeO2. Selective area electron diffraction (SAED) pattern also demonstrated the crystalline nature of the Fe-CeO2 nanoparticles. Optical properties studied using UV–vis spectroscopy indicated that band gap decreased with an increase in Fe doping. The electrical properties have been investigated via dielectric constant, dielectric loss and AC conductivity. The dielectric constant was found to increase in the Fe-doped CeO2 nanoparticles, while AC conductivity was found to be reduced, which shows good dielectric behaviour of the Fe-doped CeO2 nanoparticles. The antibacterial activity of the synthesized NPs was achieved under ambient conditions with different bacteria, and the results showed that the properties were different for both bacteria. The antimicrobial activity reflects the possibility to develop Fe-doped CeO2 NPs as antibacterial agents against extensive microorganisms to control and prevent the spread and persistence of bacterial infections.

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Synthesis of samarium-doped cerium oxide nanoparticles with room-temperature ferromagnetism by modified hydrothermal method

Shashikanth¹,

Senthilkumar²

2022

Appl. Phys. A

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Signature of room temperature ferromagnetism in Mn doped CeO2 nanoparticles

Cited by 29 publications

References 21 publications

Synthesis, Structural and Optical Properties of Mn-Doped Ceria Nanoparticles: A Promising Catalytic Material

Synthesis, Structural and Optical Properties of Mn-Doped Ceria Nanoparticles: A Promising Catalytic Material

Structural, Optical, Electrical and Antibacterial Properties of Fe-Doped CeO2 Nanoparticles

Synthesis of samarium-doped cerium oxide nanoparticles with room-temperature ferromagnetism by modified hydrothermal method

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