2006/12/30 by C. Scheck, L. Cheng, Lili Cheng +4 · 4 citations
Materials Science · Physics and Astronomy · #Chemical and Physical Properties of Materials #Heusler alloys: electronic and magnetic properties #Magnetic properties of thin films #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevlett.98.117601
published as Phys. Rev. Lett. 98(11) 117601 (2007) · 14 pages, 4 figures
arxiv created 2006/12/30 · openalex publication_date 2007/03/12 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The longest relaxation time and sharpest frequency content in ferromagnetic precession is determined by the intrinsic (Gilbert) relaxation rate G. For many years, pure iron (Fe) has had the lowest known value of G = 57 MHz for all pure ferromagnetic metals or binary alloys. We show that an epitaxial iron alloy with vanadium (V) possesses values of G which are significantly reduced to 35 +/- 5 MHz at 27% V. The result can be understood as the role of spin-orbit coupling in generating relaxation, reduced through the atomic number Z.