Study on magnetic properties of Fe-nanowires by micromagnetic simulation

Systematic study on magnetic properties of Fe-nanowires fabricated by elect rochemical deposition is performed by micromagnetic simulation, which revea ls that all nanowires show magnetic anisotropy, and the coercivity dependen ts on the diameter with a relationship of inverse square ratio. With fixed diameter, it increases as the length increases, stopping at a platform. The hysteresiss loop, static magnetic configuration and reversal mechanism all vary with changing diameter and length of the wires. Explicit explanation is presented based on the details of the magnetization process. Nanowires w ith diameter of 5nm, which have not been successfully acquired by experimen ts all show uniform reverse mechanism in the simulation. Even more intrigui ng magnetic behaviors emerge when the shape of the wires becomes more parti cle-like.