Abstract
We have explored a spontaneous domain wall motion in ferromagnetic nanowire at zero external magnetic field by means of micromagnetic simulation. Very interestingly, even with no external magnetic field, a spontaneous domain wall motion is observed with a speed about few tens of m/s, which is significant and not negligible in analysis of the domain wall dynamics on nanowires. The spontaneous zero-field wall motion is explained based on the minimization condition of the magnetostatic energy, preferring to have a wire magnetically saturated. Average speed of the spontaneous wall motion is found to increase as the wire thickness increases.
Original language | English |
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Article number | 5393126 |
Pages (from-to) | 217-219 |
Number of pages | 3 |
Journal | IEEE Transactions on Magnetics |
Volume | 46 |
Issue number | 2 |
DOIs | |
Publication status | Published - Feb 2010 |
Keywords
- Ferromagnetic wire
- Magnetostatic energy
- Micromagnetic simulation
- Spontaneous domain wall motion