2007/06/18 by Jun-Young Lee, Juneyoung Lee, Ki‐Suk Lee +6 · 5 citations
Materials Science · Physics and Astronomy · #Magnetic properties of thin films #Physics of Superconductivity and Magnetism #ZnO doping and properties #cond-mat.other #cond-mat.soft
paper · pdf · doi:10.1103/physrevb.76.184408
published as Phys. Rev. B 76, 184408 (2007) · 25 pages, 4 figures
arxiv created 2007/06/18 · openalex publication_date 2007/11/08 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
The magnetic field (or electric current) driven domain-wall motion in magnetic nanostripes is of considerable interest because it is essential to the performance of information-storage and logic devices. One of the current key problems is to understand the complex behaviors of oscillatory domain-wall motions under applied magnetic fields stronger than the so-called Walker field, beyond which the velocity of domain walls markedly drops. In a certain range just above the Walker field, the motions are not chaotic but rather periodic with different periodicities of dynamic transformations of a moving domain wall between the different types of its internal structure. In addition, three different periodicities of the dynamic transformations are calculated, which consist of different types of domain-wall structures that are transformed from one type to another. The transformation periods vary with the field strength and the nanostripe width. This phenomenon can be described by the dynamic motion of a limited number of magnetic topological solitons such as the vortex and antivortex confined in nanostripes. These results provide a considerably better understanding and details of the domain-wall motions in soft magnetic nanostripes.