Magnetic structure in Fe/Sm-Co exchange spring bilayers with intermixed interfaces
Magnetic structure in Fe/Sm-Co exchange spring bilayers with intermixed interfaces
The depth profile of the intrinsic magnetic properties in an Fe/Sm-Co bilayer fabricated under nearly optimal spring-magnet conditions was determined by complementary studies of polarized neutron reflectometry and micromagnetic simulations. We found that at the Fe/Sm-Co interface, the magnetic properties change gradually at the length scale of 8 nm. In …