A 4-Fold-Symmetry Hexagonal Ruthenium for Magnetic Heterostructures Exhibiting Enhanced Perpendicular Magnetic Anisotropy and Tunnel Magnetoresistance

被引：73
作者：
Wen, Zhenchao [1 ]
Sukegawa, Hiroaki [1 ]
Furubayashi, Takao [1 ]
Koo, Jungwoo [1 ,2 ]
Inomata, Koichiro [1 ]
Mitani, Seiji [1 ,2 ]
Hadorn, Jason Paul [1 ]
Ohkubo, Tadakatsu [1 ]
Hono, Kazuhiro [1 ,2 ]
机构：
[1] Natl Inst Mat Sci NIMS, Tsukuba, Ibaraki 3050047, Japan
[2] Univ Tsukuba, Grad Sch Pure & Appl Sci, Tsukuba, Ibaraki 3058577, Japan
来源：
ADVANCED MATERIALS | 2014年 / 26卷 / 37期
基金：
日本科学技术振兴机构;
关键词：
4-fold-symmetry hexagonal ruthenium; magnetic heterostructures; perpendicular magnetic anisotropy; tunnel magnetoresistance; ROOM-TEMPERATURE; SPIN-TRANSFER; SPINTRONICS; ELECTRONICS; JUNCTIONS; FILMS;
D O I：
10.1002/adma.201401959
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A 4-fold-symmetry hexagonal Ru emerging in epitaxial MgO/Ru/Co2FeAl/MgO heterostructures is reported, in which an approximately Ru(022¯3) growth attributes to the lattice matching between MgO, Ru, and Co2FeAl. Perpendicular magnetic anisotropy of the Co2FeAl/MgO interface is substantially enhanced. The magnetic tunnel junctions (MTJs) incorporating this structure give rise to the largest tunnel magnetoresistance for perpendicular MTJs using low damping Heusler alloys. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
引用
收藏
页码：6483 / 6490
页数：8
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