A. Roesler et Jg. Zhu, Correlation of surface roughness with the recording characteristics of thin metal-particle tape, J APPL PHYS, 87(9), 2000, pp. 5663-5665
The presence of surface roughness in tape media results in a head-to-medium
spacing that fluctuates throughout the recording process, which can have a
large impact on the recording performance of the tape. To provide an under
standing of the fluctuations introduced by the roughness, a self-consistent
recording model combined with a micromagnetic MR readback module was used
to study the recording (write) process on thin-layer metal-particle media w
ith spatially correlated surface roughness. Correlation was made between th
e surface roughness and the recording characteristics through a spatial ana
lysis of the recordings. Media with both long and short roughness correlati
on were investigated. Discussions on recording schemes that offer better im
munity to the fluctuations introduced by the surface roughness are provided
, and in particular the impact on write equalization is evaluated. (C) 2000
American Institute of Physics. [S0021-8979(00)39108-3].