Effects of Fe Dopant on Structural, Optical and Electrical Properties of NiTiO3 Materials

Abstract

In this study, the effects of Fe dopant on the structural, optical, and electrical properties of NiTiO3 materials prepared by sol-gel method were investigated. The prepared powders were investigated through X-ray diffraction, Raman scattering, scanning electron microscope, UV-visible absorption, vibrating sample magnetometer, electrical measurement to explore the structural, ferromagnetic, and electrical properties. The single-phase Ni1-xFexTiO3 (x = 0, 0.05 and 0.10) materials were obtained. Doping of Fe into NiTiO3 lead to the decreasing of lattice parameter and increased the particle size compared to the undoped sample. Ferroelectric and ferromagnetic properties of all Fe-doped NiTiO3 ceramics have been investigated at room temperature. The ferromagnetic hysteresis loop of the Fe-doped NiTiO3 sample at room temperature is due to the formation of oxygen vacancies and their associated exchange interaction. Ferroelectric properties of Fe doped samples were decreased with the increase of Fe concentration. This can be due to the Fe dopant into NiTiO3 material. The Fe dopant caused to increase the conductivity of NiTiO3 sample which resulted in a decrease in ferroelectric parameters.