Magnetic Materials for Future Computer Storage systems

Abstract

Image of 500G byte hard disk subsystems for personal computer was studied first. This systems require roughly 180 G bit/in. 2 in recording density. Problems to accomplish this density were studied in research fields of magnetic heads, recording media and head media interface. Investigation of media switching speed, surface flatness control of media and heads, fine control of grain growth and development of a few nano meter thick protective and lubricant films are considered as critical issues.