Influence of the magnetic field sweeping rate on magnetic transitions in synthetic ferrimagnets with perpendicular anisotropy
- Title
- Influence of the magnetic field sweeping rate on magnetic transitions in synthetic ferrimagnets with perpendicular anisotropy
- Author(s)
- Morgunov, R.B. ; Kunitsyna, E.I. ; Talantsev, Artem ; Koplak, O.V. ; Fache, T. ; Lu, Y. ; Mangin, S.
- Issued Date
- 2019-06
- Type
- Article
- Article Type
- Article
- Keywords
- Anisotropy ; Domain walls ; Ferrimagnetism ; Magnesia ; Magnetic fields ; Antiparallel configuration ; Dominant mechanism ; Ferrimagnets ; Magnetic transitions ; Perpendicular anisotropy ; Switching field ; Synthetic ferrimagnet ; Transition sequences ; Magnetization reversal
- ISSN
- 0003-6951
- Abstract
- The evolution of the switching field between stable states in MgO/CoFeB/Ta/CoFeB/MgO/GaAs and Pt/Co/Ir/Co/Pt/Ta/SiO2 synthetic ferrimagnets with perpendicular anisotropy as a function of the magnetic field sweeping rate (MFSR) of 0.1-104 Oe/s has been studied. The most significant effect of the MFSR is an inversion of the interstate transition sequence. In the MgO/CoFeB/Ta/CoFeB/MgO/GaAs heterostructure, the increase in MFSR switches the dominant mechanism of magnetization reversal from propagation of domain walls to a nucleation of reversed magnetization areas. In Pt/Co/Ir/Co/Pt/Ta/SiO2, the MFSR affects the final domain state of the transition, starting from the initial antiparallel configuration of the synthetic ferrimagnet. © 2019 Author(s).
- Publisher
- American Institute of Physics Inc.
- Files in This Item:
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- Appears in Collections:
- ETC 1. Journal Articles
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