Recording characteristics of perpendicular magnetic hard disk measured by nonflying single-pole head

Author

Nakamura, Yoshihisa ; Ouchi, Kazuhiro ; Yamamoto, Setsuo ; Watanabe, Isao

Author_Institution

Res. Inst. of Electr. Commun., Tohoku Univ., Sendai, Japan

Volume

26

Issue

5

fYear

1990

fDate

9/1/1990 12:00:00 AM

Firstpage

2436

Lastpage

2438

Abstract

A contact recording experiment using perpendicular magnetic hard disks was conducted with a nonflying single-pole-type magnetic head to investigate the practical feasibility of extremely high-density magnetic recording. A single-pole head produces an ideally sharp field distribution because of a strong head-medium magnetic interaction; hence, an isolated magnetization transition in perpendicular magnetic recording becomes much sharper than that in longitudinal recording at a narrower head-medium spacing. A much better durability of hard disks and heads due to a much smoother surface of the disk was also confirmed

Keywords

magnetic disc storage; magnetic heads; magnetisation; contact recording; durability; high-density magnetic recording; magnetization transition; nonflying single-pole head; perpendicular magnetic hard disk; sharp field distribution; Disk recording; Hard disks; Magnetic heads; Microscopy; Perpendicular magnetic recording; Protection; Rough surfaces; Soft magnetic materials; Substrates; Surface roughness;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.104756

Filename

104756