The influence of wire width on the charge distribution of transverse domain walls and their stray field interactions

详细信息    查看全文

• 作者：Huang T. Zeng ; D. Petit ; L. O’ ; Brien ; D. Read ; E.R. Lewis ; R.P. Cowburn
• 关键词：Magnetization distribution ; Stray-field interaction ; Domain walls ; Nano-magnetism
• 刊名：Journal of Magnetism and Magnetic Materials
• 出版年：2010
• 出版时间：July 2010
• 年：2010
• 卷：322
• 期：14
• 页码：2010-2014
• 全文大小：463 K

文摘

We present here a numerical study of the magnetostatic charge distribution of transverse Néel type domain wall in permalloy nanowires. The calculations indicate that not only is the distribution highly non-uniform within a given transverse wall but it also varies dramatically with respect to the wire width. The implications of this for magnetostatic domain wall pinning are analyzed by considering the stray field interaction between a wall and another extended magnetic body for a particular domain wall chirality, where two distinct depinning mechanisms are observed depending on the wire width.