The domain wall distortion of magnetically written bits in GdTbFe thin films

Journal Article · Sat Sep 01 00:00:00 EDT 1990 · IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (USA)

DOI:https://doi.org/10.1109/20.104701· OSTI ID:5876830

Ohtani, Y; Yoshimura, F; Hatakeyama, I ^[1]

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1. NTT Applied Electronics Lab., 162 Tokai, Ibaraki 319-11 (JP)

The distortion of the bits which are formed by a magnetic head has been studied on GdTbFe films. From read/write tests, it is found that reproduction noise is strongly affected by the film sputtering gas pressure (0.2 - 0.6Pa); high Ar pressure causes less reproduction noise. Jitter analysis with a magneto-optical read head indicates that domain wall distortion decreases as the deposition pressure increases. This distortion amplitude is found to roughly coincide with the distance bewteen iron microcrystallites (about 10 {Angstrom} to 60 {Angstrom} in diameter) which are assumed to provide nucleation sites for magnetization reversal.

• OSTI ID: 5876830
• Journal Information: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (USA), Vol. 26:5; ISSN 0018-9464
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
GADOLINIUM ALLOYS
THIN FILMS
IRON ALLOYS
TERBIUM ALLOYS
BLOCH WALL
DOMAIN STRUCTURE
MAGNETIC PROPERTIES
OPTICAL PROPERTIES
SPUTTERING
ALLOYS
FILMS
PHYSICAL PROPERTIES
RARE EARTH ALLOYS
360204* - Ceramics
Cermets
& Refractories- Physical Properties
360202 - Ceramics
Cermets
& Refractories- Structure & Phase Studies
656003 - Condensed Matter Physics- Interactions between Beams & Condensed Matter- (1987-)