Precessional Magnetization Reversals in Magnetic Nanostructures

The present paradigm of magnetic data storage is approaching its fundamental limits for areal storage density, as well as for speed in data processing. As a result, there is an urgent need for reliable alternatives to current magnetic recording media, which are based on longitudinal thin films, and to conventional mechanism of magnetization reversals, based on damping switchings. In this talk, faster modes of magnetization reversals, using precessional magnetization motion, are discussed in the context of traditional longitudinal media and its promising alternatives: perpendicular and patterned media. This analysis uses Landau-Lifshitz type equations to describe the magnetization dynamics.