title: Methods for characterizing magnetic footprints of perpendicular magnetic recording writer heads.
abstract: In this work, the magnetic footprints, along with some of its dynamic features in recording process, of perpendicular magnetic recording writer heads have been characterized by using three different techniques. Those techniques are the spin-stand stationary footprint technique, the spin-stand dynamic footprint technique, and the coherent writing technique combined with magnetic force microscope imaging method. The characteristics of those techniques have been compared to one another. It was found experimentally that the spin-stand stationary method could not precisely catch some peculiar recording dynamics of the write heads in certain conditions. The advantages and disadvantages among all those techniques are also examined and discussed in detail.
authors.forename: Shaoping
authors.initials: S
authors.lastname: Li
authors.forename: Ed
authors.initials: E
authors.lastname: Lin
authors.forename: Zach
authors.initials: Z
authors.lastname: George
authors.forename: Dave
authors.initials: D
authors.lastname: Terrill
authors.forename: H
authors.initials: H
authors.lastname: Mendez
authors.forename: J
authors.initials: J
authors.lastname: Santucci
authors.forename: Derek
authors.initials: D
authors.lastname: Yie