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Magnetic aftereffects in CoFeB/Ta/CoFeB spin valves of large area

Title
Magnetic aftereffects in CoFeB/Ta/CoFeB spin valves of large area
Authors
Morgunov, R.Lu, Y.Lavanant, M.Fache, T.Deveaux, X.Migot, S.Koplak, O.Talantsev, A.Mangin, S.
DGIST Authors
Talantsev, A.
Issue Date
2017-08
Citation
PHYSICAL REVIEW B, 96(5)
Type
Article
Article Type
Article
Keywords
AlloysDiagramDomain WallDynamicsFerromagnetic NanoparticlesFilmsGlassesRemanent MagnetizationReversalSlow Relaxation
ISSN
2469-9950
Abstract
Magnetic aftereffect measurements on a synthetic antiferromagnet with strong perpendicular anisotropy are presented. Two types of magnetic transitions are observed in the CoFeB/Ta/CoFeB bilayer where the two ferromagnetic CoFeB layers are antiferromagnetically coupled: the transition from a parallel to an antiparallel CoFeB layers magnetization alignment and the transition between two possible antiparallel magnetization states. Magnetic relaxation measurements show a complete reversal in the case of the transition between the two antiferromagnetic configurations. The experimental data can be well fitted in the frame of extended exponential relaxation using the Fatuzzo-Labrune model. Consequently, the domain nucleation and domain-wall propagation can be studied as a function of temperature and applied field.
URI
http://hdl.handle.net/20.500.11750/4444
DOI
10.1103/PhysRevB.96.054421
Publisher
AMER PHYSICAL SOC
Files:
There are no files associated with this item.
Collection:
Global Center for Bio-Convergence Spin System1. Journal Articles


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