Metastable states in magnetic nanorings
- 30 May 2003
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 67 (18), 184425
- https://doi.org/10.1103/physrevb.67.184425
Abstract
Magnetization states and hysteresis behavior of small ferromagnetic rings, of diameters 180–520 nm, have been investigated using magnetic force microscopy. In addition to the expected bi-domain (“onion”) and flux-closed (“vortex”) magnetization states, a metastable state has been found. This “twisted” state contains a 360° domain wall which can exist over a wide range of applied fields. Four possible configurations of the twisted state are possible. Micromagnetic modeling shows that the twisted state is stabilised in small diameter, narrow rings. Additionally, more complex configurations such as double twisted states with two 360° walls have been observed.Keywords
This publication has 20 references indexed in Scilit:
- Micromagnetic behavior of electrodeposited cylinder arraysPhysical Review B, 2002
- Spintronics: A Spin-Based Electronics Vision for the FutureScience, 2001
- Nanoimprint fabrication of micro-rings for magnetization reversal studiesMicroelectronic Engineering, 2001
- Vortex circulation control in mesoscopic ring magnetsApplied Physics Letters, 2001
- Flux Closure Structures in Cobalt RingsPhysical Review Letters, 2001
- Observation of a Bi-Domain State and Nucleation Free Switching in Mesoscopic Ring MagnetsPhysical Review Letters, 2001
- Ultrahigh density vertical magnetoresistive random access memory (invited)Journal of Applied Physics, 2000
- Room Temperature Magnetic Quantum Cellular AutomataScience, 2000
- Micromagnetics of mesoscopic epitaxial (110) Fe elements with nanoshaped endsJournal of Applied Physics, 1999
- Two-Dimensional Magnetic ParticlesScience, 1998