Studies on Multiferroic Behavior of Y-Mn Co-Doped Bi0.9La0.1FeO3

To understand the multiferroic behavior of the Y and Mn co-doped Bi0.9La0.1FeO3 system, we have synthesized Bi0.9La0.1FeO3 with the co-doped composition of Bi(0.9-a)YaLa0.1Fe (1-b)MnbO3 (a = 0.05, b = 0.05, 0.10, 0.15, 0.20, and a = 0.10, b = 0.10) using the solid-state reaction method. The role of Y and Mn co-doping on the structural, magnetic, ferroelectric, and dielectric properties were studied by various characterization techniques, such as x-ray diffraction, vibrating sample magnetometer (VSM), polarization-electric field (P-E) loop tracer, and dielectric measurements. X-ray diffraction studies show that a 5% doped sample is single phasic nature and crystallizes in rhombohedral (R3c) symmetry, whereas higher doped samples are dual-phase in nature with minor impurity Bi2Fe4O9 and crystallize in rhombohedral (R3c) and cubic (Pm-3 m) modulation in structural parameters with Y and Mn doping. The modulation in magnetic behavior with Y and Mn doping has been investigated and studied in the context of modification in the different interactions. P-E loop behavior is observed for lower Y (5%) and Mn (5, 10, 15%) doped samples, whereas a lossy/leaky loop is found for higher doped samples (Y-5, 10%, and Mn-20%). Lastly, the real and imaginary parts of dielectric permittivity indicate doping-induced increases in the values of epsilon ' and epsilon ''.

Automated summary

By characterizing the Y and Mn co-doped Bi0.9La0.1FeO3 system, the changes in structure, magnetic, ferroelectric, and dielectric properties are understood. The study reveals that Y and Mn co-doping can modulate the structural, magnetic, and ferroelectric properties of the material, while also enhancing the dielectric performance.