[18p-PB1-1~73] 10 Spintronics and Magnetics (Poster)

▲ [18p-PB1-56] Study on Magnetization Dynamics of Polycrystalline YIG Films by Broadband-FMR Measurement: Effect of Seed and Capping-layer

〇Satya Prakash Pati¹, Yasushi Endo^1,2 (1.Tohoku Univ. ECEI, 2.Tohoku Univ. CSRN)

Keywords:Magnetization Dynamics, Broadband FMR, YIG

Recently, the influence of different seed and capping layer on the damping parameter of adjacent ferromagnetic (FM) layer has been attracted numerous research interest. In such systems, several mechanisms that may lead to the enhancement of damping e.g. spin-orbit coupling, interfacial d-d hybridization, spin-pumping, two magnon scattering etc. Moreover, for device application, it is also required to fabricate FM thin films over a metallic electrode without affecting its damping parameter. Yttrium iron garnet (YIG, Y₃Fe₅O₁₂) is one of the well-known FM for magnonics and spintronics applications because of its very small intrinsic damping parameter (~3x10^-5) and electrically insulator. Herein, we study the effect of seed and capping-layers on Gilbert damping parameter of various thick polycrystalline YIG films.