Effect of Strontium on the Structural, Optical, and Magnetic Properties of Bi(1-x)SrxFeO3

The composite Bi(1-x) SrxFeO3 (x = 0.0, 0.2, 0.4, 0.6, 0.8) was produced via solid-state reaction

technique at 850 °C, in order to evaluate how strontium affects the structure. X-ray diffraction

(XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX),

magnetic analysis (VSM), and band gap energy measurements were performed by UV- visible

spectroscopy. The results obtained are the formation of crystalline materials of rhombohedral

surfaces and change to the pseudocubic phase at x = 0.4. The particle size declines from 36.5 nm

up to 17 nm for the pure sample in BSFO. The strontium Sr+2 caused an increase in Remnant

magnetization (Mr) and coercive field (Hc), which lead to the magnetization development of

BiFeO3, UV- visible spectroscopy used to calculate the direct optical band gap of all samples had

its value on the order of 2.4 to 2.9 eV.