Thermal stability and dynamic coercivity measurements of longitudinal magnetic recording media

Abstract

Signal decay and dynamic coercivity measurements are combined as a function of film thickness, recording density and temperature to access a wide range of stability ratios and to determine an experimental stability criterion. The samples, a series of CoPtCr recording media, are mounted on a variable temperature stage (300-390 K). The experiments are performed with a contact write/read tester using a merged read/write head in physical contact with the sample. Overall, significant results are obtained.