New Shielded Single-Pole Head With Planar Structure

Recording simulation beyond 2Tbit/in2 on bit-patterned media with shielded planar head

“…Even when the medium has the anisotropy in the longitudinal direction, we have found that a shielded planar head [2] with a pole size of 14 Â 45 nm 2 could be used for recording. The head field distributions in DT and CT directions are shown in Fig.…”

“…This paper proposes another simple technique which could minimize the effect of magnetostatic interactions at high densities. Recording simulation with a shielded planar pole head [2] is also presented aiming at high areal densities beyond 2 Tbit/in 2 .…”

Narrow-track perpendicular write heads

“…Head III [11,18] employs a tapered pole, but the neck exists only in the cross-track direction. Head IV [19] has a tapered structure without a neck (zero throat height). In any of the structures, there is the option of having the trailing edge surface perpendicular to the ABS, as depicted by the figures in brackets.…”

Shielded planar write head

“…7, there is the optimum taper angle of around 501 in terms of the maximum field gradient. In our fabrication process of the planar head [4], an anisotropy-etched pit of a quadrangular pyramid with a taper angle of 54.71 on Si(1 0 0) surface is used as a template for the tapered main pole. Therefore, the taper angle of 551 was adopted for field calculation in this article.…”

“…The tapered MCS head can generate larger field than the stepped one. To realize the tapered MCS head, we have proposed a shielded-planar single-pole head (abbreviated as a planar head hereafter) and its fabrication method [4]. In this paper, simulation design of the planar head with a tapered main pole by field calculation using a finiteelement method (FEM) is described.…”