Interplay between superconductivity and ferromagnetism in Fe/V multilayered structure studied by polarized neutron reflectometry

Polarized neutron reflectometry is used to study changes in the magnetic state of the layered heterostructure Pd(2 nm)/V(36.5 nm)/17[Fe(1 ML)/V(1 ML)]/10[Fe(4.7 nm)/V(4.7 nm)/MgO at 1.6, 3, 7 and 293 K. The temperature evolution of magnetic depth profiles is investigated. Below the superconducting transition temperature in vanadium, an anomalous decrease of magnetization is observed.