Domain wall dynamics in magnetic nanotubes driven by an external magnetic field

• 来源期刊: 中国物理B（英文版）
• 关键词: domain wall magnetic nanotubes magnetic field
• 年，卷（期）: 2018,（7）
• 页码范围: 602-606
• 页数: 5页
• 语种: 英文
• DOI: 10.1088/1674-1056/27/7/077505

摘要

We use the Landau–Lifshitz–Gilbert equation to investigate field-driven domain wall propagation in magnetic nan-otubes. We find that the distortion is maximum as the time becomes infinite and the exact rigid-body solutions are obtained analytically. We also find that the velocity increases with increasing the ratio of inner radius and outer radius. That is to say, we can accelerate domain wall motion not only by increasing the magnetic field, but also by reducing the thickness of the nanotubes.