Nonuniform micromagnetic states in thin circular dots

Zung Hang Wei, Mei Feng Lai, Ching Ray Chang, N. A. Usov, J. C. Wu, Jun Yang Lai

Research output: Contribution to journalConference article

4 Citations (Scopus)

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 languageEnglish
Pages (from-to)11-14
Number of pages4
JournalJournal of Magnetism and Magnetic Materials
Volume282
Issue number1-3
DOIs
Publication statusPublished - 2004 Nov 1
EventInternational Symposium on Advanced Magnetic Technologies - Taipei, Taiwan
Duration: 2003 Nov 132003 Nov 16

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this