The feasibility of controlling film microstructure and nanocomposition of FePt film with
various compositions of the CoAg underlayer by ion beam sputtering accompanied by an
external magnetic field was performed. The characteristic of phase separation of the CoAg
underlayer was employed to induce an inductive magnetism region which reduced the
annealing temperature acquired for L 1 0 - Fe Pt . The segregation of Co atoms could …