Zero-field spin transfer oscillators based on magnetic tunnel junction having perpendicular polarizer and planar free layer
oleh: Bin Fang, Jiafeng Feng, Huadong Gan, Roger Malmhall, Yiming Huai, Rongxin Xiong, Hongxiang Wei, Xiufeng Han, Baoshun Zhang, Zhongming Zeng
| Format: | Article |
|---|---|
| Diterbitkan: | AIP Publishing LLC 2016-12-01 |
Deskripsi
We experimentally studied spin-transfer-torque induced magnetization oscillations in an asymmetric MgO-based magnetic tunnel junction device consisting of an in-plane magnetized free layer and an out-of-plane magnetized polarizer. A steady auto-oscillation was achieved at zero magnetic field and room temperature, with an oscillation frequency that was strongly dependent on bias currents, with a large frequency tunability of 1.39 GHz/mA. Our results suggest that this new structure has a high potential for new microwave device designs.