Structural and Magnetic Properties of Y0.85La0.15Fe1−(4/3)xTixO3 (where (x = 0, 0.025, 0.05 and 0.075) Nanomaterials Derived from Sol-Gel Route

Abstract

Y0.85La0.15Fe1−(4/3)xTixO3 (where (x = 0, 0.025, 0.05 and 0.075) nanomaterials were prepared using tartare acid assisted sol-gel method. Various analytical characterization techniques such as X-ray powder diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), UV–vis absorption, Vibrating-sample magnetometer (VSM) and dielectric spectroscopy were employed to characterize the synthesized nanomaterials. Downward shifted of (121) and (002) planes were observed with an increasing of Ti concentration at Fe site through XRD study. The ability of the prepared nano-powders to absorb visible light was demonstrated by the investigation of diffuse reflectance spectra, which showed a decline in bandgap from 2.13 eV to 2.06 eV. XPS studies revealed that Y and La atoms are existed in +3 oxidation state, Fe atom is existed in mixed (+2 and +3) oxidation state and Ti atom is existed in mixed (+3 and +4) oxidation state. The highest magnetization value was observed for x = 0.05 sample through VSM study. High dielectric constant, low dielectric loss and low conductivity values were also observed for Y0.85La0.15Fe1−(4/3)xTixO3 (where (x = 0.05)).