Magnetic interaction of submicron-sized ferromagnetic rings in one-dimensional array

T. Miyawaki, K. Toyoda, M. Kohda, A. Fujita, J. Nitta

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22 Citations (Scopus)

Abstract

Magnetization characteristics of submicron-sized ferromagnetic rings in a one-dimensional array with various inter-ring distances, lx, were investigated by the magneto-optical Kerr effect and micromagnetic simulation. The onion (vortex)-to-vortex (onion) transition fields were found to be proportional to 1/lxn with n=1.36 (0.79), instead of being a simple dipole interaction model (n = 3). It was demonstrated that the transition mechanism and the inter-ring dependence are governed by the energy gain originating from the deformation of the local vortex. As a result, exchange energy as well as magnetostatic energy play important roles in the magnetization reversal of ring array.

Original languageEnglish
Article number122508
JournalApplied Physics Letters
Volume89
Issue number12
DOIs
Publication statusPublished - 2006

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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