Modeling of magnetization precession in spin-torque nano-oscillators with a tilted polarizer

Journal Article · Wed Jul 15 00:00:00 EDT 2015 · AIP Advances

DOI:https://doi.org/10.1063/1.4927585· OSTI ID:22492272

Lv, Gang; Zhang, Hong; Cao, Xuecheng; Qin, Yufeng; Li, Guihua; Wang, Linhui ^[1]; Liu, Yaowen ^[2]; Hou, Zhiwei ^[3]

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1. Information Science and Engineering School, Shandong Agricultural University, Taian City, Shandong 271018 (China)
2. School of Physical Science and Engineering, Tongji University, Shanghai 200092 (China)
3. Henan University of Technology, Zhengzhou City, Henan 450001 (China)

The spin-torque induced magnetization precession dynamics are studied in a spin-valve with a tilted spin polarizer. Macrospin simulations demonstrate that the frequency of precession state depends both on the external DC current and the intrinsic parameters of devices such as the tilted angle of spin polarizer, the damping factor and saturation magnetization of the free layer. The dependence role of those parameters is characterized by phase diagrams. An analytical model is presented, which can successfully interpret the features of precession frequency.

• OSTI ID: 22492272
• Journal Information: AIP Advances, Vol. 5, Issue 7; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 2158-3226
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COMPUTERIZED SIMULATION
DAMPING
DIRECT CURRENT
MAGNETIZATION
OSCILLATORS
PHASE DIAGRAMS
PRECESSION
SPIN
SPIN ORIENTATION
TORQUE
VALVES