Micromagnetic simulation on dynamics of spin transfer torque magnetization reversal

K. Ito

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

I study the magnetization dynamics induced by spin transfer torque in CoFe/Ru/CoFe/Cu/NiFe nano-pillars using LLG micromagnetic simulations. The required current for spin transfer torque magnetization reversal was investigated with the switching speed and the temperature. The required current in rectangular nanopillars is much larger than that in elliptical nanopillers. The temperature dependence is pretty complicated. The antiparallel to parallel magnetization reversal at 77 K requires a smaller current than at 300 K. The parallel to antiparallel magnetization reversal at 77 K requires a smaller current than at 300 K only when the pulse duration time is very short.

Original languageEnglish
Pages (from-to)2630-2632
Number of pages3
JournalIEEE Transactions on Magnetics
Volume41
Issue number10
DOIs
Publication statusPublished - 2005 Oct

Keywords

  • CPP-GMR nanopillars
  • Magnetization dynamics
  • Micromagnetic simulation
  • Spin transfer torque

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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