Tuning of energy storage capacity of BiFeO3 nanoparticles By La/Cr co-doping

Cr-doped Bi0.9La0.1Fe1-xCrxO3 with x = 0, 0.05, 0.10, 0.15, and 0.20 is fabricated by the sol-gel auto-combustion. The rhombohedral phase of pure and doped bismuth ferrite is confirmed during structural analysis. The structural parameters are further refined using X’pert High score plus by calculating the atomic positions and different profile factors which assured the reliability of the structural data. As Cr content is increased, it results the better crystallinity with uniform distribution of multi-shape grains. The size of grains varied which affected the microstructural characteristics of the parent compositions. The presence of constituent elements with a stoichiometric ratio is established by elemental analysis which guarantees elemental purity of prepared samples. The introduction of La followed by increasing contents of Cr in the parent composition improved the magnetic response. Ferroelectric analysis revealed that both saturation and remanent polarizations are increased with increasing doping levels. The calculation of recoverable and energy loss density ensured that the parent composition was more suitable for the energy storage devices. The multiferroic properties of synthesized samples are comprehensively explored to evaluate the worth of these materials for futuristic energy storage and multistate devices.