Nearly perfect (001)-oriented Ag/[CoPt/C]5/Ag composite films deposited on glass substrates

Sandwich Ag/[CoPt(3 nm)/C(3 nm)]5/Ag films were deposited on glass substrates by magnetron sputtering. After annealing at 600 °C for 30 min, a nearly-perfect (001)-oriented L10 CoPt film with extremely high perpendicular anisotropy was obtained when the thickness of Ag top- and underlayer were both equal to 5 nm. The strain energy caused by the Ag layer together with the diffusion of Ag and C atoms, resulted in the enhancement of the ordering degree of the L10 CoPt phase and the development of the (001) texture of the films.