Quadratic Scaling of Intrinsic Gilbert Damping with Spin-Orbital Coupling in L1(0) FePdPt Films: Experiments and Ab Initio Calculations

Authors

P. He
S. M. Zhou
X. Ma, William & Mary
H. B. Zhao, William & Mary
G. Luepke, William & MaryFollow
H. B. Zhao

Document Type

Article

Department/Program

Applied Science

Journal Title

Physical Review Letters

Pub Date

2013

Volume

110

Issue

7

Abstract

The dependence of the intrinsic Gilbert damping parameter alpha(0) on the spin-orbital coupling strength xi is investigated in L1(0) ordered FePd1-xPtx films by time-resolved magneto-optical Kerr effect measurements and spin-dependent ab initio calculations. Continuous tuning of alpha(0) over more than one order of magnitude is realized by changing the Pt/Pd concentration ratio showing that alpha(0) is proportional to xi(2) as changes of other leading parameters are found to be negligible. The perpendicular magnetic anisotropy is shown to have a similar variation trend with x. The present results may facilitate the design and fabrication of new magnetic alloys with large perpendicular magnetic anisotropy and tailored damping properties. DOI: 10.1103/PhysRevLett.110.077203

Recommended Citation

He, P.; Zhou, S. M.; Ma, X.; Zhao, H. B.; Luepke, G.; and Zhao, H. B., Quadratic Scaling of Intrinsic Gilbert Damping with Spin-Orbital Coupling in L1(0) FePdPt Films: Experiments and Ab Initio Calculations (2013). Physical Review Letters, 110(7).
10.1103/PhysRevLett.110.077203

DOI

10.1103/PhysRevLett.110.077203