Current-Induced Magnetization Switching of CoFeB/Ta/[Co/Pd (Pt)]-Multilayers in Magnetic Tunnel Junctions With Perpendicular Anisotropy

被引：6

作者：

Ishikawa, Shinya ^{[1
]}

Enobio, Eli C. I. ^{[1
]}

Sato, Hideo ^{[2
,3
]}

Fukami, Shunsuke ^{[2
,3
]}

Matsukura, Fumihiro ^{[1
,2
,4
]}

Ohno, Hideo ^{[1
,2
,3
,4
]}

机构：

[1] Tohoku Univ, Elect Commun Res Inst, Lab Nanoelect & Spintron, Sendai, Miyagi 9808577, Japan

[2] Tohoku Univ, Ctr Spintron Integrated Syst, Sendai, Miyagi 9808577, Japan

[3] Tohoku Univ, Ctr Innovat Integrated Elect Syst, Sendai, Miyagi 9800845, Japan

[4] Tohoku Univ, WPI Adv Inst Mat Res, Sendai, Miyagi 9808577, Japan

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2016年 / 52卷 / 07期

关键词：

Magnetic tunnel junction (MTJ); multilayer; perpendicular magnetic anisotropy; spintronics;

D O I：

10.1109/TMAG.2016.2517098

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We investigate magnetic properties of CoFeB/Ta/[Co/Pd (Pt)] multilayers and properties of magnetic tunnel junctions (MTJs) with the structures as a recording layer. CoFeB/Ta/[Co/Pd] multilayer shows a lower damping constant a than that of CoFeB/Ta/[Co/Pt] multilayer. We evaluate current-induced magnetization switching (CIMS) properties of the MTJs with CoFeB/Ta/[Co/Pd (Pt)] multilayers with the junction diameter of 15 (13) nm that show similar thermal stability factor. CIMS is observed for the MTJ with a CoFeB/Ta/[Co/Pd] multilayer at zero magnetic field, whereas it is observed for the MTJ with the CoFeB/Ta/[Co/Pt] multilayer only in the presence of an external field.

引用

页数：4

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