Magnetization in Superconductor–Ferromagnetic Metal Bilayers Induced by the Inverse Proximity Effect

Within the Green’s function formalism, the magnetization induced by the inverse proximity effect in bilayers containing a superconductor and a strongly spin-polarized ferromagnetic metal is studied. The Usadel equations written for the dirty superconductor model are solved with boundary conditions suitable for strongly spin-polarized ferromagnetic materials. The cases of near-critical temperatures and a weak proximity effect are considered. The dependences of the induced magnetization on the superconductor thickness, temperature, transparency of the superconductor–ferromagnet interface, and the spin mixing angle are studied. It is shown that the stronger the proximity effect, the weaker the inverse proximity effect.