Perpendicular magnetic anisotropy in Co2FeAl0.5Si0.5/MgO bottom electrodes for magnetic tunnel junctions

被引：25
作者：
Li, X. Q. [1 ]
Wu, Y. [1 ]
Gao, S. [1 ]
Xu, X. G. [1 ]
Miao, J. [1 ]
Jiang, Y. [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：
THIN SOLID FILMS | 2013年 / 545卷
基金：
中国国家自然科学基金;
关键词：
Perpendicular magnetic anisotropy; Heusler alloy; Ferromagnetic electrodes; Magnetic tunnel junctions; ROOM-TEMPERATURE; MAGNETORESISTANCE;
D O I：
10.1016/j.tsf.2013.08.064
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Perpendicular magnetic anisotropy (PMA) was achieved in annealed Co2FeAl0.5Si0.5 (CFAS)/MgO-based multilayers with good thermal stability up to 400 degrees C and a large anisotropy energy density K-u over 2.0 x 10(5) J/m(3). The thickness of the full-Heusler CFAS film to maintain PMA is up to 4.8 nm in which the co-existence of disordered A2, ordered B2 and fully ordered L2(1) structures is observed. X-ray photoelectron spectroscopy analysis demonstrates that the origin of the PMA is the hybridization between Co 3d and O 2p orbitals at the CFAS/MgO interface. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：503 / 508
页数：6
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