Tunable magnetization damping in transition metal ternary alloys

S. Ingvarsson*, Gang Xiao, S. S.P. Parkin, R. H. Koch

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)

Abstract

We show that magnetization damping in Permalloy, Ni80 Fe20, can be enhanced sufficiently to reduce postswitching magnetization precession to an acceptable level by alloying with the transition metal Os (osmium). The damping increases monotonically upon raising the Os concentration in Permalloy, 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.

Original languageEnglish
Pages (from-to)4995-4997
Number of pages3
JournalApplied Physics Letters
Volume85
Issue number21
DOIs
Publication statusPublished - Nov 2004

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