Current-induced domain-wall motion in [cofe/pt]5 nanowire with perpendicular magnetic anisotropy

Kab Jin Kim, Jae Chul Lee, Young Jin Cho, Chang Won Lee, Kyung Ho Shin, Sunae Seo, Kyung Jin Lee, Hyun Woo Lee, Sug Bong Choe

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

We experimentally demonstrate the current-induced domain wall motion in [CoFe/Pt]5 nanowire with perpendicular magnetic anisotropy. By use of the scanning MOKE measurement, we observe that two domain walls are moved simultaneously by spin polarized current at the current density of 1.43 × 1012 A/m2. The domain wall speed is estimated to be about 1.5 m/s, determined by the domain wall displacement (750 nm) and the current pulse duration (500 ns). From in situ resistance measurement, the temperature of the nanowire rises up to 700 K when the domain wall moves at such the high current density.

Original languageEnglish
Article number5257156
Pages (from-to)3773-3775
Number of pages3
JournalIEEE Transactions on Magnetics
Volume45
Issue number10
DOIs
Publication statusPublished - 2009 Oct

Keywords

  • Domain wall motion
  • Index Terms-Current induced
  • Perpendicular magnetic anisotropy
  • Spin transfer torque
  • Thermal activation

ASJC Scopus subject areas

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

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