Physics Commons^™

Injecting, Controlling, And Storing Magnetic Domain Walls In Ferromagnetic Nanowires, Andrew Kunz, Jonathan D. Priem, Sarah C. Reiff

Physics Faculty Research and Publications

Domain walls in ferromagnetic nanowires are important for proposed devices in recording, logic, and sensing. The realization of such devices depends in part on the ability to quickly and accurately control the domain wall from creation until placement. Using micromagnetic computer simulation we demonstrate how a combination of externally applied magnetic fields is used to quickly inject, move, and accurately place multiple domain walls within a single wire for potential recording and logical operations. The use of a magnetic field component applied perpendicular to the principle domain wall driving field is found to be critical for increased speed and reliability. …