Relaxation mechanism in NiFe thin films driven by spin angular momentum absorption throughout the antiferromagnetic phase transition in native surface oxides - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2017

Relaxation mechanism in NiFe thin films driven by spin angular momentum absorption throughout the antiferromagnetic phase transition in native surface oxides

Résumé

We report an alternative mechanism for the physical origin of the temperature-dependent ferromagnetic relaxation of Permalloy (NiFe) thin films. Through spin-pumping experiments, we demonstrate that the peak in the temperature-dependence of NiFe damping can be understood in terms of enhanced spin angular momentum absorption at the magnetic phase transition in antiferromagnetic surface-oxidized layers. These results suggest new avenues for the investigation of an incompletely-understood phenomenon in physics.
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Dates et versions

hal-01568743 , version 1 (25-07-2017)
hal-01568743 , version 2 (19-05-2019)

Identifiants

Citer

L. Frangou, G. Forestier, S. Auffret, S. Gambarelli, V. Baltz. Relaxation mechanism in NiFe thin films driven by spin angular momentum absorption throughout the antiferromagnetic phase transition in native surface oxides. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2017, 95, pp.054416. ⟨10.1103/PhysRevB.95.054416⟩. ⟨hal-01568743v1⟩
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