Effects of MgO Barrier Thickness on Magnetic Anisotropy Energy Constant in Perpendicular Magnetic Tunnel Junctions of (Co/Pd)n/MgO/(Co/Pt)n

被引：0

作者：

Lee, Chin-Ming ^{[1
,2
]}

Lee, Jia-Mou ^{[1
,3
]}

Ye, Lin-Xiu ^{[1
]}

Wang, Sheng-Yuan ^{[2
]}

Wang, Yi-Rung ^{[1
]}

Wu, Te-Ho ^{[1
,2
]}

机构：

[1] Natl Yunlin Univ Sci & Technol, Taiwan SPIN Res Ctr, Touliu 64002, Yunlin, Taiwan

[2] Natl Yunlin Univ Sci & Technol, Grad Sch Mat Sci, Touliu 64002, Yunlin, Taiwan

[3] Natl Yunlin Univ Sci & Technol, Grad Sch Engn Sci & Technol, Touliu 64002, Yunlin, Taiwan

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2008年 / 44卷 / 11期

关键词：

Extraordinary Hall effect (ERE); perpendicular anisotropy constant; perpendicular magnetic tunnel junctions (pMT[!text type='Js']Js[!/text]);

D O I：

暂无

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：

In this study, we report experimental results on perpendicular magnetic tunnel junctions composed of the binary multilayer Co/pt and Co/Pd with various MgO barrier thicknesses. The coercivities of both Co/Pt and Co/Pd layers varied substantially with the MgO thickness. Very interestingly, the perpendicular anisotropy constant Ku of the Co/Pt multilayer measured by the extraordinary Hall effect oscillated with the MgO thickness, and the period of this oscillation was about 0.3 nm. Furthermore, both the Ku value and the oscillation amplitude decreased after annealing at 150 degrees C and 200 degrees C, which suggest that the oscillation may result from the film morphology.

引用

页码：2558 / 2561

页数：4