Simulation of Realistic Particle Packing and Impact on High-Density Tape Recording

Local microscopic particle density variation stemming from packing density far below unity is one of the important aspects of digital tape recording. In this paper, we present a modeling methodology for simulating realistic particle packing in particulate tape media. The packing algorithm is able to generate randomly dispersed tape particles with packing density as high as 34%-40% and user-defined parameters such as easy axes orientation, aspect ratio variation, size distribution, etc. Micromagnetic modeling of recording characteristics have also been conducted to study the impact of various aspects of packing.