Imaging the Fine Structure of a Magnetic Domain Wall in a Ni Nanocylinder
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- 作者：Nicolas Biziere ; Christophe Gatel ; R茅my Lassalle-Balier ; Marie Claude Clochard ; Jean Eric Wegrowe ; Etienne Snoeck
- 刊名：Nano Letters
- 出版年：2013
- 出版时间：May 8, 2013
- 年：2013
- 卷：13
- 期：5
- 页码：2053-2057
- 全文大小：304K
- 年卷期：v.13,no.5(May 8, 2013)
- ISSN：1530-6992
文摘
We present the first experimental imaging of the internal DW structure in 55 and 85 nm diameter Ni nanocylinders, using electron holography combined with micromagnetic calculations. We demonstrate the magnetic transition from a hybrid magnetic state with both vortex and transverse DW in 85 nm diameter Ni nanocylinders to a pure transverse wall in thinner nanowires. This is particularly important as DWs in nanocylinders are model systems to go beyond the classical Walker limit.