Analysis of dielectric and electrical transport properties of NdFeAsO ceramic

The iron-based ceramic NdFeAsO was synthesized by the solid-state reaction method. tetragonal crystal structure confirmed at room temperature through X-ray diffraction technique. dielectric characteristics i.e. constant (εr) and loss tangent (tanδ) of sample were studied a wide range frequencies with an impedance analyzer revealed that these quantities decreased increase in frequency. anomalies observed sample, which found to be shifting towards higher side on increasing analysis ac conductivity data compound obeyed Jonscher’s universal power law as well Arrhenius equation. showed negative coefficient resistance (NTCR) behavior. electrical conduction mechanism can explained correlated barrier hopping (CBH) model.