Investigation of electronic polarization – AC and DC conductivities of CeO2/MnO2 nanocomposite

Srinivasan, M.; Punithavelan, N.

doi:10.1016/j.jksus.2022.101990

Cited by 4 publications

(1 citation statement)

References 30 publications

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“…As shown in Figure 10, the sample CeO-2 exhibited a higher impedance value as compared to CeO-1, probably due to the greater crystallite size of the latter. Other studies have found that the Nyquist plot radius increases as the temperature increases [29,73], confirming the temperature dependence of the electrical behavior of cerium oxide nanoparticles. From the simulated Nyquist plots, the ohmic resistance can be obtained from the intercept of the semicircle with Z axis.…”

Section: Dielectric Behaviorsupporting

confidence: 70%

Investigating the Vibrational, Magnetic and Dielectric Properties, and Antioxidant Activity of Cerium Oxide Nanoparticles

Fifere¹,

Airinei²,

Asăndulesa³

et al. 2022

IJMS

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Dielectric, magnetic and Raman measurements of cerium oxide nanoparticles obtained by the precipitation method are discussed. Morphological study was performed by scanning electron microscopy, confirming the formation of nanoparticles of 5–27 nm. The Raman spectra exhibited a strong band around 465 cm−1, corresponding to the symmetrical stretching mode of the Ce-O8 vibrational unit. The nature of the room temperature ferromagnetism of cerium oxide nanoparticles was analyzed, taking into account the oxygen defects at the surface or interface of the nanoparticles. The evolution of dielectric constant, ε′, and dielectric loss, ε″ was studied as a function of frequency at different temperatures. Additionally, the variation of the electric conductivity versus temperature was investigated. Finally, complex impedance study of the cerium oxide nanoparticles was performed.

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Section: Dielectric Behaviorsupporting

confidence: 70%