Effect of Co layer thickness on magnetic relaxation in Pt/Co/Ir/Co/Pt/GaAs spin valve - Université de Lorraine Accéder directement au contenu
Article Dans Une Revue Journal of Magnetism and Magnetic Materials Année : 2018

Effect of Co layer thickness on magnetic relaxation in Pt/Co/Ir/Co/Pt/GaAs spin valve

Résumé

Long magnetic relaxation (up to few hours) between stable magnetic states was analyzed in Pt/Co/Ir/Co/ Pt/GaAs heterostructures of different Co layers thickness. The experimental data were compared to a large variety of theoretical models amongst which the Fatuzzo-Labrune one seems to be the more relevant. The contributions from domain nucleation and domain wall motion to magnetic relaxation of the spin valves were separated and evaluated. The increase of Co layer thickness suppresses the domain nucleation and enhances the domain wall propagation. The obtained data provide an understanding of the limitations of switching time in the spin valves of large area necessary for GMR biosensors.
Fichier non déposé

Dates et versions

hal-02011594 , version 1 (18-03-2019)

Identifiants

Citer

R. B. Morgunov, G. L. L'Vova, A. D. Talantsev, O. V. Koplak, T. Fache, et al.. Effect of Co layer thickness on magnetic relaxation in Pt/Co/Ir/Co/Pt/GaAs spin valve. Journal of Magnetism and Magnetic Materials, 2018, 459, pp.33-36. ⟨10.1016/j.jmmm.2017.12.083⟩. ⟨hal-02011594⟩
33 Consultations
1 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More