Critical Field of Spin Torque Oscillator with Perpendicularly Magnetized Free Layer

被引：57
|
作者：
Taniguchi, Tomohiro [1 ]
Arai, Hiroko [1 ]
Tsunegi, Sumito [1 ]
Tamaru, Shingo [1 ]
Kubota, Hitoshi [1 ]
Imamura, Hiroshi [1 ]
机构：
[1] Spintron Res Ctr, Natl Inst Adv Ind Sci & Technol AIST, Tsukuba, Ibaraki 3058568, Japan
来源：
APPLIED PHYSICS EXPRESS | 2013年 / 6卷 / 12期
关键词：
MICROWAVE EMISSION; DRIVEN; POLARIZER;
D O I：
10.7567/APEX.6.123003
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The oscillation properties of a spin torque oscillator consisting of a perpendicularly magnetized free layer and an in-plane magnetized pinned layer are studied based on an analysis of the energy balance between spin torque and damping. The critical value of an external magnetic field applied normal to the film plane is found, below which the controllable range of the oscillation frequency by the current is suppressed. The value of the critical field depends on the magnetic anisotropy, the saturation magnetization, and the spin torque parameter. (C) 2013 The Japan Society of Applied Physics
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页数：4
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