Even though the natural crystal structure of CrTe is the NiAs structure, concern on the zinc-blende (ZB) CrTe increases for the aim of the application to the spintronics. In the bulk state, ZB-CrTe was predicted to be a ferromagnetic (FM) half-metal with the equilibrium lattice constant of 6.292 Å by first-principles calculations [1]. Previously we investigated the ZB-CrTe(001) surface, reporting that a half-metallicity maintains at both the Cr and Te terminated surfaces [2]. In a recent experimental study, the ZB-CrTe thin film of 5 nm was synthesized successfully on the ZnTe buffer layers by the low temperature molecular beam epitaxy (LT-MBE). It is observed a strong in-plane magnetic anisotropy in the film with an easy axis along the [001] direction [3]. In this work, we focused on magnetocrystalline anisotropy (MCA) of ZB-CrTe(001) surfaces by using full- potential linearized augmented plane wave (FLAPW) method within general gradient approximation. In this study we investigated two types of the ZB-CrTe(001) surface termination; the Cr-terminated (Cr-term.) and Te-terminated (Te-term.) surfaces. It was found in the present calculations that the Cr-term. surface has an out-of-plane magnetic easy axis, whereas the Te-term. surface does an in-plane one. We will discuss the MCA and the magnetism at the surfaces of ZB-CrTe(001) in detail with single-particle energy spectra. Exchange coupled composite (ECC) media with perpendicular magnetization have demonstrated major advantage over conventional perpendicular media, including a reduction in the switching field for the same thermal stability and greater insensitivity to easy ... 전체 초록 보기