Ultralow energy switching with spin polarized magneto-electric properties of co-doped cubic phase BFO: A first-principles study

•To enhance the switching functionality of BFO.•The effect of co-dopants on spin-polarized properties of BFO is explored using OTFG.•An increase in the energy states density is observed at the Fermi level.•The dielectric constant for La and Co co-doped system decreases.•Co-doping enhanced magnetization with minimum switching energy of MESO capacitor.