Current-induced domain wall motion in perpendicularly magnetized CoFeB nanowire

S. Fukami, T. Suzuki, Y. Nakatani, N. Ishiwata, M. Yamanouchi, S. Ikeda, N. Kasai, H. Ohno

Research output: Contribution to journalArticlepeer-review

106 Citations (Scopus)

Abstract

Current-induced domain wall motion in perpendicularly magnetized CoFeB nanowires with a stack structure of Ta(1.0 nm)/CoFeB(1.2 nm)/MgO(2.0 nm)/Ta(1.0 nm) was investigated. Domain wall motion driven by adiabatic spin-transfer torque was observed at a current of about 74 μA, corresponding to a current density of 6.2× 107A/ cm2. The obtained results were compared with those of a micromagnetic simulation and the spin polarization of the CoFeB was estimated to be 0.72.

Original languageEnglish
Article number082504
JournalApplied Physics Letters
Volume98
Issue number8
DOIs
Publication statusPublished - 2011 Feb 21

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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