Overlapping large polaron tunneling conductivity and giant dielectric constant in Ni_(0.5)Zn_(0.5)Fe_(1.5)Cr_(0.5)O_4 http://Nio.5Zno.5Fe1.5Cro.5O4 nanoparticles (NPs)

摘要

We report an orderly study on the structural and dielectric properties of Ni_(0.5)Zn_(0.5)Fe_(1.5)Cr_(0.5)O_4 nanoparticles (NPs) synthesized by a polyethylene glycol (PEG)-assisted hydrothermal technique. XRD, FT-IR, FE-SEM and EDX measurements were implemented for the structural, morphological and compositional investigations of the product. Dielectric spectroscopy was used for the dielectric property investigation of the sample. Average particle size of the nanoparticles was estimated using Debye-Scherrer's equation as 34 nm. Electrical properties of the sample have been investigated in the range of 1 Hz to 3 MHz (233-412 K).