Analysis of Magnetization Switching via Vortex Formation in Soft Magnetic Nanoparticles

This paper illustrates quasi-static magnetization switching via vortex formation in soft magnetic nanoparticles of various shapes and sizes. The research is motivated by the rapid development of novel alternatives to the current paradigm of magnetic recording, which approaches its fundamental limits. The study is performed by using NMAG simulation environment which is a finite-element micro-magnetic simulation package based on Python scripts running on a Linux virtual machine. Various shapes and sizes are considered in this analysis of hysteresis phenomena and vortex formations in nanoparticles subject to different orientations of the magnetic field.