Template Assisted Growth and Characterization of Electrodeposited Permalloy(Ni_(80)Fe_(20)) /Cu Multilayered Nanowires

摘要

Nanowire-based devices have been found to exhibit improved performance as compared to devices based on thin/thick films or bulk materials due to shape anisotropy, high aspect ratio dimensionality and surface functionality. Magnetic multilayered nanowires such as permalloy/Cu are potential candidates for magnetic sensors, high density magnetic data storage, and magnetoelectronic/spintronic applications (1-2). By exploiting the interface phenomena from periodic layering of magnetic and non-magnetic materials with appropriate layer thicknesses, giant magnetoresistance (GMR) property can be observed in this system. Contrary to the current-in-plane (CIP)-GMR generally observed in conventional multilayered thin films, multilayered NWs produce current-perpendicular-to-plane (CPP)-GMR with potentially larger signals in magnetoresistance response (3). In addition, more precise measurements in GMR response are observed compared to CPP-GMR performed using thin film configurations (4).