Ultra-low magnetic damping of a metallic ferromagnet.

ABSTRACT: Magnetic damping is of critical importance for devices that seek to exploit the electronic spin degree of freedom, as damping strongly affects the energy required and speed at which a device can operate. However, theory has struggled to quantitatively predict the damping, even in common ferromagnetic materials^1-3. This presents a challenge for a broad range of applications in spintronics⁴ and spin-orbitronics that depend on materials and structures with ultra-low damping^5,6. It is believed that achieving ultra-low damping in metallic ferromagnets is limited by the scattering of magnons by the conduction electrons. However, we report on a binary alloy of cobalt and iron that overcomes this obstacle and exhibits a damping parameter approaching 10^-4

SUBMITTER: Schoen MAW 

PROVIDER: S-EPMC11520347 | biostudies-literature | 2016

REPOSITORIES: biostudies-literature