Abstract
Gadolinium (Gd) doped bismuth ferrite Bi1-xGdxFeO3 (x = 0.07) nanoparticles (NPs) were synthesized by a sol–gel technique. Crystalline nature was analyzed by X-ray diffraction (XRD) which showed a rhombohedral distorted perovskite structure with space group R3c. By using the Debye-Scherrer formula, the crystallite size was found to be 32.5 nm. Field Emission Scanning Electron Microscope (FESEM) image verified that at higher concentrations of Gd, particle size decreases. Raman spectroscopy confirmed the Bi-O and Fe-O vibrational modes in the NPs. In the UV–visible absorption spectra, a peak was obtained at 455 nm and the band gap of the Bi0.93Gd0.07FeO3 NPs was determined to be 2.30 eV. The non-linear M−H loop of 7 % Gd-doped BiFeO3 NPs is attributed to a weakly ferromagnetic nature.
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