首页|Structural, optical, and dielectric properties for Mg0·6Cu0·2Ni0·2Cr2O4 chromite spinel
Structural, optical, and dielectric properties for Mg0·6Cu0·2Ni0·2Cr2O4 chromite spinel
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NSTL
Elsevier
? 2021 Elsevier B.V.In this work, the structural, optical, and dielectric properties for Mg0·6Cu0·2Ni0·2Cr2O4 chromite sample prepared by sol-gel process were investigated. The XRD characterization for this sample confirmed the development of the face-centered cubic spinel structure with Fd3￣m space group. From the UV–Vis optical absorbance, the synthesized chromite shows significantly lower direct band gap energy and has an appropriate absorption rate in the visible light region. The variations of penetration depth, extinction coefficient, refractive coefficient, dispersion energy parameters, and dielectric permittivity constants were also interpreted. The Non-Overlapping Small Polaron Tunneling (NSPT) and the Correlated Barrier Hopping (CBH) are the suitable models to describe the conduction process for the prepared sample. The behavior of dielectric constants has been interpreted based on the Maxwell-Wagner's theory of interfacial polarization. The behavior of imaginary part of impedance (Z″) shows a dielectric-relaxation phenomenon in the sample with activation energies near to those determined from the conductivity study.
Laboratory of Physical Chemistry of Materials Department of Physics Faculty of Sciences of Monastir University of Monastir
Research Unit of Valorization and Optimization of Exploitation of Resources Faculty of Science and Technology of Sidi Bouzid Kairouan University
Laboratory of Physics of Materials and Nanomaterials Applied to the Environment (LaPhyMNE) Faculty of Sciences of Gabès Cited Erriadh University of Gabès
Department of Mechanical Engineering College of Engineering Prince Sattam Bin Abdulaziz University (PSAU)
NSTL
Elsevier
