Spin transfer in nanomagnetic devices with perpendicular anisotropy

被引：239
作者：
Meng, H
Wang, JP
机构：
[1] Univ Minnesota, MINT, Minneapolis, MN 55455 USA
[2] Univ Minnesota, Dept Elect & Comp Engn, Minneapolis, MN 55455 USA
来源：
APPLIED PHYSICS LETTERS | 2006年 / 88卷 / 17期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1063/1.2198797
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Spin momentum transfer in a nanomagnetic device with perpendicular magnetic anisotropy for both free and fixed magnetic layers is studied. The perpendicular anisotropy is induced by using CoFe/Pt multilayer. The magnetoresistive loop shows that the perpendicular switching fields for the free and fixed layers are 170 and 380 Oe, respectively, with Delta R/R=0.47%. Resistance-current scanning clearly shows a full out-of-plane switching of the free layer magnetization under a sweeping current, which fully excludes the effect of switching by the magnetic field generated by the current. The critical current density is around 1.0 x 10(8) A/cm(2), which could be tuned by changing the CoFe/Pt multilayer structures. (c) 2006 American Institute of Physics.
引用
收藏
页数：3
相关论文
共 34 条
[1]   Spin-polarized current switching of a Co thin film nanomagnet [J].
Albert, FJ ;
Katine, JA ;
Buhrman, RA ;
Ralph, DC .
APPLIED PHYSICS LETTERS, 2000, 77 (23) :3809-3811
[2]   Controlled normal and inverse current-induced magnetization switching and magnetoresistance in magnetic nanopillars [J].
AlHajDarwish, M ;
Kurt, H ;
Urazhdin, S ;
Fert, A ;
Loloee, R ;
Pratt, WP ;
Bass, J .
PHYSICAL REVIEW LETTERS, 2004, 93 (15) :157203-1
[3]   Emission of spin waves by a magnetic multilayer traversed by a current [J].
Berger, L .
PHYSICAL REVIEW B, 1996, 54 (13) :9353-9358
[4]   Current-driven switching in a single exchange-biased ferromagnetic layer [J].
Chen, TY ;
Ji, Y ;
Chien, CL ;
Stiles, MD .
PHYSICAL REVIEW LETTERS, 2004, 93 (02) :026601-1
[5]   Current-induced magnetization dynamics in current perpendicular to the plane spin valves [J].
Covington, M ;
AlHajDarwish, M ;
Ding, Y ;
Gokemeijer, NJ ;
Seigler, MA .
PHYSICAL REVIEW B, 2004, 69 (18) :184406-1
[6]   PREDICTION AND CONFIRMATION OF PERPENDICULAR MAGNETIC-ANISOTROPY IN CO/NI MULTILAYERS [J].
DAALDEROP, GHO ;
KELLY, PJ ;
DENBROEDER, FJA .
PHYSICAL REVIEW LETTERS, 1992, 68 (05) :682-685
[7]   [CoFe/Pt]xn multilayer films with a small perpendicular magnetic anisotropy -: art. no. 10J117 [J].
Ding, YF ;
Judy, JH ;
Wang, JP .
JOURNAL OF APPLIED PHYSICS, 2005, 97 (10)
[8]   Fabrication of current-induced magnetization switching devices using etch-back planarization process [J].
Ding, YF ;
Pakala, M ;
Nguyen, P ;
Meng, H ;
Huai, YM ;
Wang, JP .
JOURNAL OF APPLIED PHYSICS, 2005, 97 (10)
[9]   Magneto-resistive read sensor with perpendicular magnetic anisotropy [J].
Ding, YF ;
Judy, JH ;
Wang, JP .
IEEE TRANSACTIONS ON MAGNETICS, 2005, 41 (02) :707-712
[10]   INTERFACE MAGNETIC-ANISOTROPY IN EPITAXIAL SUPERLATTICES [J].
ENGEL, BN ;
ENGLAND, CD ;
VANLEEUWEN, RA ;
WIEDMANN, MH ;
FALCO, CM .
PHYSICAL REVIEW LETTERS, 1991, 67 (14) :1910-1913
1234