A low inductance metal-in-gap head using a side-core concept

Author

Sano, A. ; Egawa, M. ; Nitta, M. ; Takayanagi, K. ; Matsushita, Teruo ; Fujita, T. ; Packard, E. ; Nguyen, V. ; Limb, R. ; Frost, J. ; Watanabe, T.

Author_Institution

Minebea Co. Ltd., Shizuoka, Japan

Volume

29

Issue

6

fYear

1993

fDate

11/1/1993 12:00:00 AM

Firstpage

3888

Lastpage

3890

Abstract

A low inductance metal-in-gap (MIG) head for rigid disk drives using a single crystal ferrite core was developed. Side mounting of a core was adopted to reduce its thickness, thus improving the inductance, and to achieve the ease of controlling the narrow track width and small throat height. It was demonstrated that the side-core composite (SCC) head has several advantages over conventional monolithic and composite heads in terms of electrical performance and manufacturability. Testing methods called swept frequency and swept current were also developed to demonstrate different interpretations of magnetic recording phenomena

Keywords

ferrite devices; hard discs; magnetic heads; electrical performance; inductance; manufacturability; metal-in-gap head; narrow track width; rigid disk drives; side-core concept; single crystal ferrite core; swept current; swept frequency; throat height; Disk drives; Ferrites; Frequency; Inductance; Magnetic cores; Magnetic heads; Magnetic recording; Manufacturing; Testing; Transistors;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.281332

Filename

281332