Preliminary investigation for a cylindrical magnetic storage system

Author

Yamada, Hiroshi ; Shimatsu, Takehito ; Watanabe, Isao ; Muraoka, Hiroaki ; Nakamura, Yoshihisa

Author_Institution

Tohoku Univ., Sendai, Japan

Volume

39

Issue

6

fYear

2003

Firstpage

3619

Lastpage

3621

Abstract

A cylindrical magnetic storage system was built and preliminary measurements were made. The system is expected to overcome the writing problems at high areal densities caused by write head skew angle and is aimed at the realization of 1 Tb/in² 2 Gb/s perpendicular magnetic recording. Cylindrical substrates, sputtering equipment, and a read/write tester for a cylindrical magnetic storage were fabricated. For this preliminary investigation, the length and diameter of the cylindrical substrates were 1 in. Thin films (protective layer, storage layer, seed layer, etc.) were deposited by rotating the cylindrical substrate during the sputtering process. Fundamental read/write characteristics were measured using an 8 mm video-tape-recorder metal-in-gap head and a merged giant magnetoresistive head with a pico-slider.

Keywords

giant magnetoresistance; magnetic storage; magnetic thin films; perpendicular magnetic recording; sputter deposition; 1 in; 2 Gbit/s; 8 mm; VTR metal-in-gap head; cylindrical magnetic storage system; cylindrical substrates; giant magnetoresistive head; high areal density; perpendicular magnetic recording; pico-slider; protective layer; read/write tester; seed layer; sputtering equipment; storage layer; terabit storage; thin film sputter deposition; write head skew angle; Hydraulic actuators; Magnetic anisotropy; Magnetic heads; Magnetic memory; Perpendicular magnetic recording; Protection; Sputtering; Substrates; Testing; Writing;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2003.815433

Filename

1252846