Stress-Induced Changes in Closure Domain Structure Dynamics in Bistable Ferromagnetic Microwire |
| J. Onufer, J. Ziman, M. Kladivová
Department of Physics, Technical University of Košice, Letná 9, 042 00 Košice, Slovakia |
| Full Text PDF |
| A new experimental method for the study of closure domain structure dynamics in bistable ferromagnetic microwires is proposed. The simple experimental set-up enables detection of the presence of a free domain wall in the wire after application of a well-defined rectangular magnetic field pulse. The changes in closure domain structure dynamics, caused by applied tensile stress, are demonstrated by measurements on Fe77.5B15Si7.5 glass-coated microwire. Minimum critical field for the release of a domain wall from the closure domain structure increases with increasing stress, while on the other hand, the minimum time needed for this process rapidly decreases with increasing stress. |
DOI: 10.12693/APhysPolA.126.80 PACS numbers: 75.30.Gw, 75.50.Kj, 75.60.-d, 75.60.Ch, 75.60.Ej, 75.60.Jk |