Current induced domain wall motion in nanostripes with perpendicular magnetic anisotropy

Su Jung Noh; Reasmey P. Tan; Byong Sun Chun; Young Keun Kim

doi:10.1016/j.jmmm.2010.05.047

Current induced domain wall motion in nanostripes with perpendicular magnetic anisotropy

Su Jung Noh, Reasmey P. Tan, Byong Sun Chun, Young Keun Kim

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

We report micromagnetic modeling results of current induced domain wall (DW) motion in magnetic devices with perpendicular magnetic anisotropy by solving the LandauLifschitzGilbert equation including adiabatic and non-adiabatic terms. A nanostripe model system with dimensions of 500 nm (L)×25 nm (W)×5 nm (H) was selected for calculating the DW motion and its width, as a function of various parameters such as non-adiabatic contribution, anisotropy constant (K_u), saturation magnetization (M_s), and temperature (T). The DW velocity was found to increase when the values of K_u and T were increased and the M_s value decreased. In addition, a reduction of the domain wall width could be achieved by increasing K_u and lowering M_s values regardless of the non-adiabatic constant value.

Original language	English
Pages (from-to)	3601-3604
Number of pages	4
Journal	Journal of Magnetism and Magnetic Materials
Volume	322
Issue number	21
DOIs	https://doi.org/10.1016/j.jmmm.2010.05.047
Publication status	Published - 2010 Nov

Keywords

Domain wall
Micromagnetics
Perpendicular magnetic anisotropy

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1016/j.jmmm.2010.05.047

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@article{f3426e0a69424561ab62d305167ad1b9,

title = "Current induced domain wall motion in nanostripes with perpendicular magnetic anisotropy",

abstract = "We report micromagnetic modeling results of current induced domain wall (DW) motion in magnetic devices with perpendicular magnetic anisotropy by solving the LandauLifschitzGilbert equation including adiabatic and non-adiabatic terms. A nanostripe model system with dimensions of 500 nm (L)×25 nm (W)×5 nm (H) was selected for calculating the DW motion and its width, as a function of various parameters such as non-adiabatic contribution, anisotropy constant (Ku), saturation magnetization (Ms), and temperature (T). The DW velocity was found to increase when the values of Ku and T were increased and the Ms value decreased. In addition, a reduction of the domain wall width could be achieved by increasing Ku and lowering Ms values regardless of the non-adiabatic constant value.",

keywords = "Domain wall, Micromagnetics, Perpendicular magnetic anisotropy",

author = "Noh, {Su Jung} and Tan, {Reasmey P.} and Chun, {Byong Sun} and Kim, {Young Keun}",

note = "Funding Information: This work was supported by the degree and research center (DRC) program funded by the Korea Research Council of Fundamental Science and Technology (KRCF), and the IT R&D program of MKE/KEIT, through a project “Technology development of 30 nm level high density perpendicular STT-MRAM (2009-F-004-01)”.",

year = "2010",

month = nov,

doi = "10.1016/j.jmmm.2010.05.047",

language = "English",

volume = "322",

pages = "3601--3604",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier",

number = "21",

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TY - JOUR

T1 - Current induced domain wall motion in nanostripes with perpendicular magnetic anisotropy

AU - Noh, Su Jung

AU - Tan, Reasmey P.

AU - Chun, Byong Sun

AU - Kim, Young Keun

N1 - Funding Information: This work was supported by the degree and research center (DRC) program funded by the Korea Research Council of Fundamental Science and Technology (KRCF), and the IT R&D program of MKE/KEIT, through a project “Technology development of 30 nm level high density perpendicular STT-MRAM (2009-F-004-01)”.

PY - 2010/11

Y1 - 2010/11

N2 - We report micromagnetic modeling results of current induced domain wall (DW) motion in magnetic devices with perpendicular magnetic anisotropy by solving the LandauLifschitzGilbert equation including adiabatic and non-adiabatic terms. A nanostripe model system with dimensions of 500 nm (L)×25 nm (W)×5 nm (H) was selected for calculating the DW motion and its width, as a function of various parameters such as non-adiabatic contribution, anisotropy constant (Ku), saturation magnetization (Ms), and temperature (T). The DW velocity was found to increase when the values of Ku and T were increased and the Ms value decreased. In addition, a reduction of the domain wall width could be achieved by increasing Ku and lowering Ms values regardless of the non-adiabatic constant value.

AB - We report micromagnetic modeling results of current induced domain wall (DW) motion in magnetic devices with perpendicular magnetic anisotropy by solving the LandauLifschitzGilbert equation including adiabatic and non-adiabatic terms. A nanostripe model system with dimensions of 500 nm (L)×25 nm (W)×5 nm (H) was selected for calculating the DW motion and its width, as a function of various parameters such as non-adiabatic contribution, anisotropy constant (Ku), saturation magnetization (Ms), and temperature (T). The DW velocity was found to increase when the values of Ku and T were increased and the Ms value decreased. In addition, a reduction of the domain wall width could be achieved by increasing Ku and lowering Ms values regardless of the non-adiabatic constant value.

KW - Domain wall

KW - Micromagnetics

KW - Perpendicular magnetic anisotropy

UR - http://www.scopus.com/inward/record.url?scp=77955572881&partnerID=8YFLogxK

U2 - 10.1016/j.jmmm.2010.05.047

DO - 10.1016/j.jmmm.2010.05.047

M3 - Article

AN - SCOPUS:77955572881

VL - 322

SP - 3601

EP - 3604

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

SN - 0304-8853

IS - 21

ER -

Current induced domain wall motion in nanostripes with perpendicular magnetic anisotropy

Abstract

Keywords

ASJC Scopus subject areas

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