High-density recording characterization using a merged MR head and a dual-layer perpendicular disk

Author

Sonobe, Y. ; Ikeda, Y. ; Uchida, H. ; Toyooka, T.

Author_Institution

Res. Lab., IBM Japan Ltd., Tokyo, Japan

Volume

31

Issue

6

fYear

1995

fDate

11/1/1995 12:00:00 AM

Firstpage

2681

Lastpage

2683

Abstract

The combination of a merged MR head and a dual-layer perpendicular disk is a promising technology for future high-density recording. High-density recording using this combination was characterized to obtain a D₅₀ of 98 kFCI for read operations, a D₅₀ of 80 kFCI for write operations, and an overwrite of 50 dB, and the results were compared with those for longitudinal recording. Higher-density recording is expected to be achieved by optimizing the shield gap length in the read element, the pole thickness in the write element, and the Ms value of a disk

Keywords

magnetic heads; magnetoresistive devices; perpendicular magnetic recording; dual-layer perpendicular disk; high-density recording characterization; merged MR head; overwrite; pole thickness; read operations; shield gap length; write operations; Coils; Design optimization; Disk recording; Hard disks; Laboratories; Magnetic heads; Perpendicular magnetic recording; Sensor phenomena and characterization; Signal resolution; Solids;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.490091

Filename

490091