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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
Authors
Morgunov, R.B.Kunitsyna, E.I.Talantsev, ArtemKoplak, O.V.Fache, T.Lu, Y.Mangin, S.
Issue Date
2019-06
Citation
Applied Physics Letters, 114(22), 222402
Type
Article
Article Type
Article
Keywords
AnisotropyDomain wallsFerrimagnetismMagnesiaMagnetic fieldsAntiparallel configurationDominant mechanismFerrimagnetsMagnetic transitionsPerpendicular anisotropySwitching fieldSynthetic ferrimagnetTransition sequencesMagnetization 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).
URI
http://hdl.handle.net/20.500.11750/10079
DOI
10.1063/1.5096951
Publisher
American Institute of Physics Inc.
Files:
There are no files associated with this item.
Collection:
ETC1. Journal Articles


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