[19p-P1-1~74] 10 スピントロニクス・マグネティクス（ポスター）

▼ [19p-P1-16] Enhancement of L2₁ ordering and spin-polarization of Co₂FeSi thin film by substitution of Fe with Ti

〇(D)CHEN Jiamin^2,1、Sakuraba Yuya¹、Miura Yoshio^3,1、Furubayashi Takao¹、Hono Kazuhiro^1,2 (1.NIMS、2.Tsukuba Univ.、3.Kyoto Inst. of Tech)

キーワード：Heulser alloy,L21 ordering,half metal

We reported a new type of Heusler alloy Co₂Fe_1-xTi_xSi thin films prepared by co-sputtering on MgO(001) single crystal substrate and its structural, magnetic and transport properties were systematically investigated. Fermi level of this Heusler alloy was able to be tuned toward the center of band gap by increasing Ti composition leading to an improvement of robust half-metallicity. The improvement of half-metallic property had been confirmed by sign change of signal and temperature dependence suppression of resistivity change in AMR measurement experimentally. L2₁ ordering and spin-polarization were enhanced simultaneously in CFTS Heusler alloy, which made it a promising material for spintronic application.