Abstract
We investigate the dynamics of the domain wall in a nonuniform field driven domain wall motion memory concept. The equation of motion for a transverse Néel-type domain wall under a nonuniform transverse magnetic field is obtained with a collective coordinate approach. The validity of the equation of the motion is confirmed with micromagnetic simulations. We find that the domain wall velocity depends on the domain wall width, Gilbert damping parameter [formula omitted], saturation magnetization, and the gradient of the field. The domain wall velocity of [formula omitted] is obtained with typical material as Permalloy with a moderate field gradient [formula omitted]. It has promising results for memory applications.
| Original language | English |
|---|---|
| Pages (from-to) | 2156 |
| Number of pages | 1 |
| Journal | Applied Physics Letters |
| Volume | 92 |
| Issue number | 19 |
| DOIs | |
| State | Published - 12 May 2008 |
Bibliographical note
Funding Information:This work was supported by a Korea Research Foundation Grant funded by the Korean Government (MOEHRD) (KRF-2006-312-C00529). The author thanks Professor H.-W. Lee and K.-J. Lee for helpful discussions.