| Description |
This thesis investigates the interplay between ultrathin film engineering and spintronic applications by exploring the magnetization dynamics in multilayer structures and their impact on spin current asymmetry. The benefits and motivations of integrating ultrathin films into spintronic devices are outlined, emphasizing their potential to yield low-power, high-efficiency components. The theoretical framework is built around principles such as ferromagnetic resonance (FMR), spin pumping, and spin diffusion, providing an overview of the magnetization dynamics in ferromagnetic ultrathin films. Experimental work was conducted using magnetron sputtering to fabricate Ta/Py?Cu/Pt/Co/Ta ultrathin films, followed by FMR measurements to probe the dynamic response of the Py and Co layers. Analysis focused on quantifying the damping parameter as a function of PT thickness, wich revealed explicit asymmetries in the spin current. These findings contribute to a deeper understanding of how interfacial characteristics and layer dimensions control spin current and dissipation mechanisms. |
