Title :
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
fDate :
9/1/1997 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
