Tunable Magnetic Damping in Ferromagnetic/Non-magnetic Bilayer Films

Abstract

With the advancement in the methods for thin film deposition, tailoring of magnetic properties of thin ferromagnetic layer by using a neighboring layer has gained attention of researchers. From the perspective of fundamental understanding, the role of interface in different bilayer and multilayer systems has been an intense area of investigation. Utilizing the additional tunable properties originating from the interface has been foreseen as a route to improve the performance of numerous devices in application. In this chapter, the important aspect of magnetic damping in ferromagnetic/non-magnetic (FM/NM) bilayer films with primary focus on the recent experimental results is presented. Before describing various cases, we discuss two important mechanisms involved in FM/NM bilayer system, namely spin pumping and interfacial d-d hybridization.