Synthesis and dielectric properties of Cr-substituted CeO2 nanoparticles

Harish, Balasubramanian; Avinash, B. S.; Chaturmukha, V. S.; Jayanna, H. S.; Lamani, Ashok R.; Yallappa, S.

doi:10.1007/s10854-018-8731-y

Cited by 12 publications

(1 citation statement)

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“…Cerium oxide can be considered a promising candidate to replace conventional silicon oxide gate dielectrics in metal oxide semiconductors and memory devices due to its high dielectric constant, high refractive index and high thermal stability with low leakage current [21][22][23]. In addition, the cubic fluorite structure of the cerium oxide is close to that of the silicon, allowing cerium oxide-based devices to be integrated in silicon-based electronic circuits [24,25].…”

Section: Introductionmentioning

confidence: 99%

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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