Tuning of Magnetic Damping in Y₃Fe₅O₁₂/Metal Bilayers for Spin-Wave Conduit Termination.

ABSTRACT: In this work, we investigate the structural and dynamic magnetic properties of yttrium iron garnet (YIG) films grown onto gadolinium gallium garnet (GGG) substrates with thin platinum, iridium, and gold spacer layers. Separation of the YIG film from the GGG substrate by a metal film strongly affects the crystalline structure of YIG and its magnetic damping. Despite the presence of structural defects, however, the YIG films exhibit a clear ferromagnetic resonance response. The ability to tune the magnetic damping without substantial changes to magnetization offers attractive prospects for the design of complex spin-wave conduits. We show that the insertion of a 1-nm-thick metal layer between YIG and GGG already increases the effective damping parameter enough to efficiently absorb spin wave

SUBMITTER: Krysztofik A 

PROVIDER: S-EPMC9030244 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature