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

Z. Zhang, T. Tanaka, K. Matsuyama

Research output: Contribution to journalArticle

Abstract

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).

Original languageEnglish
Article number055922
JournalAIP Advances
Volume7
Issue number5
DOIs
Publication statusPublished - May 1 2017

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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