Cobalt doping of bismuth ferrite for matched dielectric and magnetic loss

We get insight into the atomic-molecular evolution of crystal engineering on BiFeO₃ (BFO). Doping a small amount of Co ions into BFO enables us to introduce more oxygen vacancies that transform the dipole configuration. This gives rise to a matched dielectric loss tan δ_e and the magnetic loss tan δ_m, as doping also induces a microstructure deformation with enhanced superexchange interaction. Using matched electromagnetic parameters, the electromagnetic energy absorption is dramatically improved with over 200% increments. The deep insight into the evolution principle broadens the horizon of manipulating the electromagnetic wave and energy flow to advance modern information technology.