4 documents found, page 1 of 1
Assessing the relaxation mechanisms contributions on magnetoimpedance effect in...
Santos, J. G. S.; Silva, E. F.; Gamino, M.; Ferreira, Armando José Barros; Vaz, F.; Bohn, F.; Correa, M. A.Damping parameter plays a key role in the magnetization dynamics of ferri/ferromagnetic materials with potential technological applications. Experimentally the damping parameter can be estimated from the linewidth of the ferromagnetic resonance experiment, which is altered by distinct mechanisms associated with extrinsic contributions, such as spin pumping and two-magnon scattering mechanisms. Here we perform a...
Unraveling the role of magnetic anisotropy on the thermoelectric response: A th...
Correa, M. A.; Gamino, M.; De Melo, A. S.; Lopes, M. V. P.; Santos, J. G. S.; Souza, A. L. R.; França Junior, S. A. N.; Ferreira, A.Magnetic anisotropies have a key role in tailoring magnetic behavior in ferromagnetic (FM) systems for specific sensor applications. Furthermore, they are also essential elements for manipulating the thermoelectric response in anomalous Nernst effect (ANE) and longitudinal spin Seebeck effect (LSSE) systems at unsaturated field regimes. Here, we propose a theoretical approach and explore the role of magnetic an...
Investigation of large enhancement of spin hall angle in heterostructures of Ag...
Santos, O. A.; Silva, E. F.; Gamino, M.; Mendes, J. B. S.; Rezende, S. M.; Azevedo, A.The spin Hall angle (SHA) represents the efficiency of the conversion between spin current into charge current and vice-versa. In this paper, we report the experimental detection of large enhancement of the effective SHA in heterostructures of yttrium iron garnet (YIG)/[Pt-Ag]/Pt and YIG/[Pt-Ag], when compared with measurements in YIG/Pt bilayers. The notation [Pt-Ag] represents the nanoparticles island formati...
The role of metallic nanoparticles in the enhancement of the spin Hall magnetor...
Mendes, J. B. S; Gamino, M.; Silva, E. F.; Santos, O. Alves; Rodríguez-Suárez, R. L.; Machado, F. L. A.; Azevedo, A.; Rezende, S. M.Enhancements in the spin Hall magnetoresistance (SMR) close to one order of magnitude in bilayers of yttrium iron garnet (YIG) and platinum with embedded metallic nanoparticles of Ag and Cu are reported. The en hancement in the electrical detection of the back reflected spin current in YIG/Pt-MP(t MP )-Pt relative to YIG/Pt is eff attributed to the increase in the effective spin Hall angle ( θ^eff SHA) due to t...