Oscillatory interlayer exchange coupling in MgO tunnel junctions with perpendicular magnetic anisotropy

被引：45
|
作者：
Nistor, Lavinia E. [1 ]
Rodmacq, Bernard [1 ]
Auffret, Stephane [1 ]
Schuhl, Alain [1 ]
Chshiev, Mairbek [1 ]
Dieny, Bernard [1 ]
机构：
[1] CEA INAC, UMR CEA CNRS UJF 8191, SPINTEC, F-38054 Grenoble, France
来源：
PHYSICAL REVIEW B | 2010年 / 81卷 / 22期
关键词：
GIANT MAGNETORESISTANCE; TEMPERATURE; MULTILAYERS; DEPENDENCE;
D O I：
10.1103/PhysRevB.81.220407
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The influence of magnetic layer thickness on the interlayer coupling through a tunnel barrier is investigated in Co/MgO/Co structures with perpendicular anisotropy. Despite the rather large MgO thickness, a clear antiferromagnetic coupling is observed. It oscillates with increasing magnetic layer thickness, in agreement with theories on indirect coupling through insulating spacers. Although the average interlayer coupling strength decreases with increasing annealing temperature, constant period and amplitude of these oscillations are observed for all annealing temperatures.
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页数：4
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