Strong perpendicular magnetic anisotropy in Co2FeAl0.5Si0.5 film sandwiched by MgO layers

被引：8
|
作者：
Wang Sheng [1 ]
Li Xiao-Qi [1 ]
Bai Li-Juan [1 ]
Xu Xiao-Guang [1 ]
Miao Jun [1 ]
Jiang Yong [1 ]
机构：
[1] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China
来源：
CHINESE PHYSICS B | 2013年 / 22卷 / 05期
基金：
中国国家自然科学基金;
关键词：
half-metallic ferromagnets; MgO layers; perpendicular magnetic anisotropy;
D O I：
10.1088/1674-1056/22/5/057305
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Co2FeAl0.5Si0.5 (CFAS)-based multilayers sandwiched by MgO layers have been deposited and annealed at different temperatures. Perpendicular magnetic anisotropy (PMA) with the magnetic anisotropy energy density K-u approximate to 2.5 x 10(6) erg/cm(3) (1 erg = 10(-7) J) and the coercivity H-c = 363 Oe (1 Oe = 79.9775 A . m(-1)) has been achieved in the Si/SiO2/MgO (1.5 nm)/CFAS (2.5 nm)/MgO (0.8 nm)/Pt (5 nm) film annealed at 300 degrees C. The strong PMA is mainly due to the top MgO layer. The structure can be used as top magnetic electrodes in half-metallic perpendicular magnetic tunnel junctions.
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页数：4
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