Effect of Inserting a Pt Layer into a Perpendicularly Magnetized Co/Ni Multilayered Film in Terms of Current-Induced Domain Wall Motion

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概要

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• The effect of inserting a Pt layer into a Co/Ni multilayered film with a perpendicular magnetization in terms of current-induced magnetic domain wall (DW) motion has been investigated. We found that the current density required to obtain DW motion was approximately 1.9 times greater in Co/Ni/Pt wire than in Co/Ni wire, in spite of the Co/Ni and Co/Ni/Pt multilayered films having almost identical magnetic properties. Estimation of spin polarization from measurements of DW velocity indicated that the decreased spin polarization caused by insertion of the Pt layers accounts for the increased current density required for DW motion in Co/Ni/Pt wire.

• 2012-10-25

著者

• Suemitsu Katsumi

  Embedded Memory Technology Department, Renesas Electronics Corporation, Sagamihara 252-5298, Japan

• Kariyada Eiji

  Embedded Memory Technology Department, Renesas Electronics Corporation, Sagamihara 252-5298, Japan

• Ohshima Norikazu

  Embedded Memory Technology Department, Renesas Electronics Corporation, Sagamihara 252-5298, Japan

• Tanigawa Hironobu

  Embedded Memory Technology Department, Renesas Electronics Corporation, Sagamihara 252-5298, Japan

• Suzuki Tetsuhiro

  Embedded Memory Technology Department, Renesas Electronics Corporation, Sagamihara 252-5298, Japan

関連論文

• Effect of Inserting a Pt Layer into a Perpendicularly Magnetized Co/Ni Multilayered Film in Terms of Current-Induced Domain Wall Motion

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