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

L. Frangou; G. Forestier; S. Auffret; S. Gambarelli; V. Baltz

doi:10.1103/PhysRevB.95.054416

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

Materials Science 2017-02-15 v1

Authors: L. Frangou , G. Forestier , S. Auffret , S. Gambarelli , V. Baltz

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

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.

Keywords

ferromagnetic relaxation spin angular momentum absorption antiferromagnetic phase transition NiFe surface oxides spin pumping

Cite

@article{arxiv.1612.05556,
  title  = {Relaxation mechanism driven by spin angular momentum absorption throughout antiferromagnetic phase transition in NiFe surface oxides},
  author = {L. Frangou and G. Forestier and S. Auffret and S. Gambarelli and V. Baltz},
  journal= {arXiv preprint arXiv:1612.05556},
  year   = {2017}
}

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

Abstract

Keywords

Cite

Related papers