Abstract
Abstract We investigate the magnetization dynamics in CoFeB/(Ag, Pt) multilayer films grown onto amorphous substrate engineered to have in-plane magnetic anisotropy and distinct effective damping parameter. We go beyond quasi-static magnetic properties and characterize the dynamic magnetic response by employing ferromagnetic resonance and magnetoimpedance measurements. The link between magnetic features and dynamic magnetic behavior allows us to identify the role of the effective damping parameter and of the magnetic anisotropy on the magnetoimpedance effect in multilayer films. In addition, we consider a theoretical approach to interpret the experimental data and also predict the magnetization dynamics in wider ranges of the explored parameters. From our results, we provide insights to tune the damping parameter and magnetic anisotropy in engineered multilayer films grown onto amorphous substrates.
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