Abstract
Micromagnetic states are strongly related to sizes of nano-dots. The quasiuniform state becomes unstable and transforms to a new nonuniform state as the diameter of the permalloy circular dot exceeds some critical size. The magnetization curvature increases gradually as the diameter increases. Finally, when the diameter is larger than another critical size, the new nonuniform state becomes unstable and a vortex enters the particle. Hence the new nonuniform state plays an intermediate role in the evolution from the quasiuniform state to the vortex state as the diameter increases.
| Original language | English |
|---|---|
| Pages (from-to) | 11-14 |
| Number of pages | 4 |
| Journal | Journal of Magnetism and Magnetic Materials |
| Volume | 282 |
| Issue number | 1-3 |
| DOIs | |
| Publication status | Published - 2004 Nov 1 |
| Event | International Symposium on Advanced Magnetic Technologies - Taipei, Taiwan Duration: 2003 Nov 13 → 2003 Nov 16 |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
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Cite this
Wei, Z. H., Lai, M. F., Chang, C. R., Usov, N. A., Wu, J. C., & Lai, J. Y. (2004). Nonuniform micromagnetic states in thin circular dots. Journal of Magnetism and Magnetic Materials, 282(1-3), 11-14. https://doi.org/10.1016/j.jmmm.2004.04.003