Abstract
Transition between a vortex magnetic state and a uniform magnetic state in a Ni81Fe19 mesoscopic ring has been investigated in terms of resistive-noise spectroscopy. The observed low-frequency noise exhibits critical enhancement around the magnetization saturation. This noise enhancement can be argued from the viewpoint of the critical phenomena due to the chiral-symmetry breakdown of mesoscopic magnetic-structure, which can present a typical mechanism of symmetry transition of magnetic structure in mesoscopic ferromagnets.
Original language | English |
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Pages (from-to) | 25-27 |
Number of pages | 3 |
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, Province of China Duration: 2003 Nov 13 → 2003 Nov 16 |
Keywords
- Critical phenomena
- Nano magnetics
- Nano ring
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics