Simulation of magnetic recording and playback processes

Abstract

Recording information on magnetic media (disks, tapes) was first demonstrated almost 100 years ago. Since then many inventions and advancements have been made. Yet, a thorough understanding of the physical mechanisms involved is still lacking. The motivation for modeling the magnetic recording and performance is to gain better understanding of the physical processes so as to better predict the performance of magnetically recorded media. Once accurate models are developed one can turn to the important issues of design and optimization. On January 15, 1993 Robert L. Brott from 3M has described ongoing work on the modeling and simulation of magnetic recording. The model for the recording process is given in terms of complicated nonlinear hysteretic integral equation. The playback process is modeled relatively simply. He described his algorithm, and posed some open problems.