First-principles investigation of magnetocrystalline anisotropy at the L2(1) full Heusler vertical bar MgO interfaces and tunnel junctions

Article

关键词: PERPENDICULAR MAGNETIC-ANISOTROPY;    AUGMENTED-WAVE METHOD;    THIN-FILM;    MULTILAYERS;    OXIDATION;    INPLANE;    MOMENT;    ENERGY;    COBALT;    PD/CO;   

DOI  :  10.1103/PhysRevB.94.104418

来源: SCIE

【 摘 要 】

Magnetocrystalline anisotropy at Heusler alloy vertical bar MgO interfaces has been studied using first-principles calculations. It has been found that Co-terminated Co2FeAl vertical bar MgO interfaces show perpendicular magnetic anisotropy up to 1.31 mJ/m(2), while those with FeAl termination exhibit in-plane magnetic anisotropy. Atomic layer-resolved analysis indicates that the origin of perpendicularmagnetic anisotropy in Co2FeAl vertical bar MgO interfaces can be attributed to the out-of-plane orbital contributions of interfacial Co atoms. At the same time, Co2MnGe and Co2MnSi interfaced with MgO tend to favor in-plane magnetic anisotropy for all terminations.

【 授权许可】

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