Recording field analysis of a high track density SPT head(3)-SPT head with tapered main pole, tapered return path, and side shield yokes

摘要

In order to achieve high linear and track densities using Single Pole Type (SPT) head, large recording field, large recording field gradient and small stray field to the adjacent tracks as well as skew-effect-free recording field distribution are important. We have simultaneously introduced tapered main pole, tapered return path on trailing side, and side shield yokes to the cusp field SPT head, then the finite-element simulations are carried out. The calculated results show that the head has recording field strength of 18 kOe, recording field gradient of 481 Oem, and (stray field strength at the adjacent track center)I(recording field strength at home track center) of 0.16 when areal density of I Tb/in{sup}2 (track width = 38 nm) is assumed. The skew-effect-free recording field distribution has also been realized.