Consequence of B-site substitution of rare earth (Gd sup(+3)) on electrical properties of manganese ferrite nanoparticles

Abstract

Rare-earth-doped ferrite nanomaterials are known to show remarkable variation in structural, magnetic, and electrical behavior compared to their un-doped counterparts. In this report, low-temperature synthesis of Gd sup(+3) -doped manganese ferrite with composition MnFe sub(2-x) Gd sub(x) O sub(4) (x = 0.02, 0.04, 0.06, 0.08) has been represented. This report includes structural investigations done using X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) and morphological analysis done through scanning electron microscopy (SEM). The compositional analysis was done through energy dispersive X-ray spectroscopy EDS. The variation of electrical properties like DC resistivity 'rho', mobility 'mu', and dielectric constant 'epsilon' as a function of temperature was also investigated and was seen to depend on rare earth concentration in the ferrite structure.