Blocking of magnetization ripple in FeAlN thin film tape heads

Author

Wolfson, Jason T. ; Kryder, Mark H.

Author_Institution

Carnegie Mellon Univ., Pittsburgh, PA, USA

Volume

33

Issue

5

fYear

1997

fDate

9/1/1997 12:00:00 AM

Firstpage

2854

Lastpage

2856

Abstract

In this paper we present domain images on the pole tips of thin film tape recording heads using high moment FeAlN pole materials (4πM _s=20 kGauss). These heads are of the type used in quarter inch cartridge (QIC) tape drives, with a record gap dimension of 1.9 μm, a written trackwidth of 33 μm, and a 14 turn coil. The pole thicknesses ranged from 4 to 4.5 μm. These heads exhibited domain structures on the pole tips indicative of the blocking of magnetization ripple seen in sheet films of soft magnetic materials with thicknesses less than 1000 Å

Keywords

aluminium compounds; iron compounds; magnetic domains; magnetic heads; magnetic thin film devices; magnetisation; soft magnetic materials; FeAlN; domain imaging; high moment FeAlN material; magnetization ripple blocking; pole tip; quarter inch cartridge tape drive; soft magnetic material; thin film tape recording head; Anisotropic magnetoresistance; Coils; Lamination; Magnetic films; Magnetic heads; Magnetic materials; Magnetization; Magnetooptic effects; Periodic structures; Photometry; Soft magnetic materials; Thin films; Transistors;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.617754

Filename

617754