Title :
A new single-pole head structure for high writability
Author :
Yamakawa, Kiyoshi ; Ise, Kazuyuki ; Takahashi, Shingo ; Ouchi, Kazuhiro
Author_Institution :
Akita Res. Inst. of Adv. Technol., Japan
Abstract :
A new single-pole-type head with a novel structure has been developed. The head has a set of coil windings located on both sides of the main pole and two return path yokes surrounding the main pole and the coil. This head structure provides high stray field immunity due to a shielding effect of the return yokes. Head, field calculation was performed to design the head in terms of high writability. It was found that the head generates preferable field distribution and the field strength and gradient can be improved by reducing throat height of the main pole and narrowing separation of the main pole and the return yoke, respectively. This was experimentally confirmed with fabricated heads. The 0.2 μm-wide head showed a high writing performance.
Keywords :
coils; magnetic heads; magnetic shielding; perpendicular magnetic recording; 0.2 micron; coil windings; head field calculation; preferable field distribution; return path yokes; shielding effect; single-pole head structure; stray field immunity; throat height; writability; writing performance; Coils; Fabrication; Jitter; Magnetic flux; Magnetic heads; Magnetic noise; Magnetic separation; Perpendicular magnetic recording; Saturation magnetization; Writing;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2002.988930
