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

doi:10.1063/1.3558917

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 journal › Article › peer-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 language	English
Article number	082504
Journal	Applied Physics Letters
Volume	98
Issue number	8
DOIs	https://doi.org/10.1063/1.3558917
Publication status	Published - 2011 Feb 21

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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title = "Current-induced domain wall motion in perpendicularly magnetized CoFeB nanowire",

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.",

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

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AU - Fukami, S.

AU - Suzuki, T.

AU - Nakatani, Y.

AU - Ishiwata, N.

AU - Yamanouchi, M.

AU - Ikeda, S.

AU - Kasai, N.

AU - Ohno, H.

N1 - Funding Information: A portion of this work was supported by the Japan Society for the Promotion of Science (JSPS) through its “Funding Program for World-Leading Innovative R&D on Science and Technology (FIRST Program).” Copyright: Copyright 2011 Elsevier B.V., All rights reserved.

PY - 2011/2/21

Y1 - 2011/2/21

N2 - 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.

AB - 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.

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