arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1702.02536cond-mat.mes-hall
收藏

利用涡旋产生的磁场实现纳米尺度的可重构磁畴壁钉扎

Reconfigurable magnetic domain wall pinning at the nano-scale using vortex-generated magnetic fields

Aaron C. H. Hurst, Joshua A. Izaac, Fouzia Altaf, Vincent Baltz, Peter J. Metaxas

摘要:

我们证明,磁涡核下产生的杂散磁场可以用来产生纳米尺度的,本地化的磁畴壁的钉扎网站在下面的,垂直磁化的纳米带。此外,钉扎强度可以通过切换涡核极性来调节。实际上,切换芯极性使得其与扩展域的磁化对准(而不是与其相反)可以用于将涡旋介导的壁脱钉场减小40%至90%,这取决于系统几何形状。在窄带中,通过将芯部从带的中心移开,也可以显著减小去钉扎场。

英文摘要:

We demonstrate that the stray magnetic field generated beneath magnetic vortex cores can be used to generate nano-scale, localized pinning sites for magnetic domain walls in an underlying, perpendicularly magnetized nanostrip. Moreover, the pinning strength can be tuned by toggling the vortex core polarity. Indeed, switching the core polarity so that it is aligned with the magnetization of the expanding domain (rather than against it) can be used to reduce the vortex-mediated wall depinning field by between 40% and 90%, depending on the system geometry. Significant reductions in the depinning field can also be obtained in narrow strips by shifting the core away from the strip's center.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑