Tunable magnetization damping in transition metal ternary alloys

S. Ingvarsson; Gang Xiao; S. S. P. Parkin; R. H. Koch

doi:10.1063/1.1828232

Tunable magnetization damping in transition metal ternary alloys

Materials Science 2009-11-10 v1

Authors: S. Ingvarsson , Gang Xiao , S. S. P. Parkin , R. H. Koch

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

We show that magnetization damping in Permalloy, Ni80Fe20 (``Py''), can be enhanced sufficiently to reduce post-switching magnetization precession to an acceptable level by alloying with the transition metal osmium (Os). The damping increases monotonically upon raising the Os-concentration in Py, at least up to 9% of Os. Other effects of alloying with Os are suppression of magnetization and enhancement of in-plane anisotropy. Magnetization damping also increases significantly upon alloying with the five other transition metals included in this study (4d-elements: Nb, Ru, Rh; 5d-elements: Ta, Pt) but never as strongly as with Os.

Keywords

magnetization damping Permalloy transition metal ternary alloys osmium in-plane anisotropy magnetization precession

Cite

@article{arxiv.cond-mat/0408608,
  title  = {Tunable magnetization damping in transition metal ternary alloys},
  author = {S. Ingvarsson and Gang Xiao and S. S. P. Parkin and R. H. Koch},
  journal= {arXiv preprint arXiv:cond-mat/0408608},
  year   = {2009}
}

Comments

4 pages, submitted to Appl. Phys. Lett

Tunable magnetization damping in transition metal ternary alloys

Abstract

Keywords

Cite

Comments

Related papers