Stability of high spin polarization via substituting sp-element in Co_2MnSn_(1-x)Ga_x Heusler alloys

摘要

The stability of high spin polarization in Co_2MnSn_(1-x)Ga_x (x = 0, 0.25, 0.5, 0.75, 1) Heulser alloys via substitution of sp-element has been studied using Full potential linearized augmented plane wave (FPLAPW) method. We demonstrate that substitution of Ga for Sn maintains a high degree of spin polarization, throughout all intermediate alloys. The magnetism in present alloys is governed by localized moment on Mn atom mainly. This wide range of highly spin polarized materials can be proved as ideal candidates for magneto-electronic devices.