The writing performance of a novel single-pole head, named as CF-SPT head,
on double-layer perpendicular media was studied. The CF-SPT head was effect
ively driven with dual pancake-type coils between which the main-pole was s
andwiched. Furthermore, it was found that the head with double return-yoke
showed a high stray field robustness and an efficient recording performance
when compared with a single return-path-yoke head. (C) 2001 Elsevier Scien
ce B.V. All rights reserved.