Perpendicular recording heads for extremely high density recording

It has been shown that excellent recording performance can be achieved at high areal densities using a probe head with square pole tip and perpendicular media with soft under-layers In order to maintain the writability at even narrower track widths and minimize the side writing effects at large skew angles, finite-element modeling has shown that trapezoidal pole tip is needed In this work we present the general head design and magnetic recording performance of our third generation advanced probe heads with trapezoidal pole tips.