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

doi:10.1109/TMAG.2009.2025605

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

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-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 language	English
Article number	5257156
Pages (from-to)	3773-3775
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	45
Issue number	10
DOIs	https://doi.org/10.1109/TMAG.2009.2025605
Publication status	Published - 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

Access to Document

10.1109/TMAG.2009.2025605

Cite this

@article{251ff561dba24db48842eff74eaac45c,

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

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.",

keywords = "Domain wall motion, Index Terms-Current induced, Perpendicular magnetic anisotropy, Spin transfer torque, Thermal activation",

author = "Kim, {Kab Jin} and Lee, {Jae Chul} and Cho, {Young Jin} and Lee, {Chang Won} and Shin, {Kyung Ho} and Sunae Seo and Lee, {Kyung Jin} and Lee, {Hyun Woo} and Choe, {Sug Bong}",

note = "Funding Information: This study was supported by the KOSEF through the NRL program (R0A-2007-000-20032-0).",

year = "2009",

month = oct,

doi = "10.1109/TMAG.2009.2025605",

language = "English",

volume = "45",

pages = "3773--3775",

journal = "IEEE Transactions on Magnetics",

issn = "0018-9464",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

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T1 - Current-induced domain-wall motion in [cofe/pt]5 nanowire with perpendicular magnetic anisotropy

AU - Kim, Kab Jin

AU - Lee, Jae Chul

AU - Cho, Young Jin

AU - Lee, Chang Won

AU - Shin, Kyung Ho

AU - Seo, Sunae

AU - Lee, Kyung Jin

AU - Lee, Hyun Woo

AU - Choe, Sug Bong

N1 - Funding Information: This study was supported by the KOSEF through the NRL program (R0A-2007-000-20032-0).

PY - 2009/10

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N2 - 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.

AB - 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.

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KW - Spin transfer torque

KW - Thermal activation

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