Optimizing Multiferroic Properties in 12% Sm-Doped BiFeO3 Through Cobalt Doping

Abstract Presented study explores the effect of varying cobalt doping on the enhancement of multiferroic behavior of 12% samarium (Sm)-doped bismuth ferrite (BiFeO 3 ). Samples with the composition Bi 0.88 Sm 0.12 Fe 1‒ x Co x O 3 ( x = 0.04, 0.06, 0.08, 0.12) were prepared using the auto-combustion technique. The structural, magnetic and dielectric characteristics were analyzed using x-ray diffraction, scanning electron microscopy (SEM), vibrating sample magnetometry (VSM), LCR analysis and polarization-electric field (P-E) measurements. Our investigation disclose that the 12% Co-doped sample exhibits improved ferromagnetic, ferroelectric and dielectric properties compared to samples with lower Co doping levels. These results shows that cobalt doping effectively optimizes the multiferroic behavior of 12% Sm-doped bismuth ferrite, suggesting new insights into the design of advanced multifunctional materials.