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

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.
Authors:
; ; ; ; ;  [1] ;  [2] ;  [3]
  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)
Publication Date:
OSTI Identifier:
22492272
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Advances; Journal Volume: 5; Journal Issue: 7; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; COMPUTERIZED SIMULATION; DAMPING; DIRECT CURRENT; MAGNETIZATION; OSCILLATORS; PHASE DIAGRAMS; PRECESSION; SPIN; SPIN ORIENTATION; TORQUE; VALVES