Ab initio study of defected surfaces in CoPt L10 alloy

Samy Brahimi and Hamid Bouzar

The equiatomic CoPt alloy is a promising candidate for ultra high magnetic data recording, due to its tetragonal L10 structure which has a high uniaxial magnetic anisotropy. In this work we present ab initio study of magnetic properties of defected surfaces in CoPt L10 alloy, especially surfaces with localized faults, such as antisites. Our results show that the Co (Pt) local magnetic moment is increased in the presence of Pt (Co) antisite.

Poster