Control of Domain Wall Position by Electrical Current in Structured Co/Ni Wire with Perpendicular Magnetic Anisotropy

Tomohiro Koyama; Gen Yamada; Hironobu Tanigawa; Shinya Kasai; Norikazu Ohshima; Shunsuke Fukami; Nobuyuki Ishiwata; Yoshinobu Nakatani; Teruo Ono

doi:10.1143/APEX.1.101303

Control of Domain Wall Position by Electrical Current in Structured Co/Ni Wire with Perpendicular Magnetic Anisotropy

Materials Science 2015-05-13 v1 Other Condensed Matter

Authors: Tomohiro Koyama , Gen Yamada , Hironobu Tanigawa , Shinya Kasai , Norikazu Ohshima , Shunsuke Fukami , Nobuyuki Ishiwata , Yoshinobu Nakatani , Teruo Ono

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Abstract

We report the direct observation of the current-driven domain wall (DW) motion by magnetic force microscopy in a structured Co/Ni wire with perpendicular magnetic anisotropy. The wire has notches to define the DW position. It is demonstrated that single current pulses can precisely control the DW position from notch to notch with high DW velocity of 40 m/s.

Keywords

domain wall motion current-driven Co/Ni wire perpendicular magnetic anisotropy magnetic force microscopy notch domain wall velocity

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@article{arxiv.0809.0047,
  title  = {Control of Domain Wall Position by Electrical Current in Structured Co/Ni Wire with Perpendicular Magnetic Anisotropy},
  author = {Tomohiro Koyama and Gen Yamada and Hironobu Tanigawa and Shinya Kasai and Norikazu Ohshima and Shunsuke Fukami and Nobuyuki Ishiwata and Yoshinobu Nakatani and Teruo Ono},
  journal= {arXiv preprint arXiv:0809.0047},
  year   = {2015}
}

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12 pages, 3 figures

Control of Domain Wall Position by Electrical Current in Structured Co/Ni Wire with Perpendicular Magnetic Anisotropy

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