Micromagnetic simulation of domain wall propagation along meandering magnetic strip with spatially modulated material parameters

Micromagnetic simulation of domain wall propagation along meandering magnetic strip with spatially modulated material parameters

Feasibility of two-dimensional propagation of the domain wall (DW) was investigated by micromagnetic simulations. Successful bit-by-bit propagation of the DW was demonstrated in a designed meandering magnetic strip with periodic material parameter modulation, used as DW pinning sites (PSs). The DW w...

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Main Authors: Z. Zhang, T. Tanaka, K. Matsuyama
Format: Article
Language:English
Published: AIP Publishing LLC 2017-05-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/1.4975368
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spelling doaj-45194f398d1a40b88a7edb71c29c619b2020-11-25T02:44:55ZengAIP Publishing LLCAIP Advances2158-32262017-05-0175055922055922-410.1063/1.4975368189791ADVMicromagnetic simulation of domain wall propagation along meandering magnetic strip with spatially modulated material parametersZ. Zhang0T. Tanaka1K. Matsuyama2ISEE, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, JapanISEE, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, JapanISEE, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, JapanFeasibility of two-dimensional propagation of the domain wall (DW) was investigated by micromagnetic simulations. Successful bit-by-bit propagation of the DW was demonstrated in a designed meandering magnetic strip with periodic material parameter modulation, used as DW pinning sites (PSs). The DW was successively shifted along the straight part and around the corner with a spin polarized current pulses with 1 ns-width, 3 ns-interval and same amplitude. A practical current amplitude margin (30 % of mid value) was achieved by analyzing the energy landscape around the meandering corner and optimizing the location of the PSs, which energy barrier height assures a thermal stability criterion (>60 kBT).http://dx.doi.org/10.1063/1.4975368
collection DOAJ
language English
format Article
sources DOAJ
author Z. Zhang
T. Tanaka
K. Matsuyama
spellingShingle Z. Zhang
T. Tanaka
K. Matsuyama
Micromagnetic simulation of domain wall propagation along meandering magnetic strip with spatially modulated material parameters
AIP Advances
author_facet Z. Zhang
T. Tanaka
K. Matsuyama
author_sort Z. Zhang
title Micromagnetic simulation of domain wall propagation along meandering magnetic strip with spatially modulated material parameters
title_short Micromagnetic simulation of domain wall propagation along meandering magnetic strip with spatially modulated material parameters
title_full Micromagnetic simulation of domain wall propagation along meandering magnetic strip with spatially modulated material parameters
title_fullStr Micromagnetic simulation of domain wall propagation along meandering magnetic strip with spatially modulated material parameters
title_full_unstemmed Micromagnetic simulation of domain wall propagation along meandering magnetic strip with spatially modulated material parameters
title_sort micromagnetic simulation of domain wall propagation along meandering magnetic strip with spatially modulated material parameters
publisher AIP Publishing LLC
series AIP Advances
issn 2158-3226
publishDate 2017-05-01
description Feasibility of two-dimensional propagation of the domain wall (DW) was investigated by micromagnetic simulations. Successful bit-by-bit propagation of the DW was demonstrated in a designed meandering magnetic strip with periodic material parameter modulation, used as DW pinning sites (PSs). The DW was successively shifted along the straight part and around the corner with a spin polarized current pulses with 1 ns-width, 3 ns-interval and same amplitude. A practical current amplitude margin (30 % of mid value) was achieved by analyzing the energy landscape around the meandering corner and optimizing the location of the PSs, which energy barrier height assures a thermal stability criterion (>60 kBT).
url http://dx.doi.org/10.1063/1.4975368
work_keys_str_mv AT zzhang micromagneticsimulationofdomainwallpropagationalongmeanderingmagneticstripwithspatiallymodulatedmaterialparameters
AT ttanaka micromagneticsimulationofdomainwallpropagationalongmeanderingmagneticstripwithspatiallymodulatedmaterialparameters
AT kmatsuyama micromagneticsimulationofdomainwallpropagationalongmeanderingmagneticstripwithspatiallymodulatedmaterialparameters
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