Stock material or miscellaneous articles – Composite – Of metal
Reexamination Certificate
2005-01-11
2005-01-11
Nakarani, D. S. (Department: 1773)
Stock material or miscellaneous articles
Composite
Of metal
C428S690000, C428S690000, C428S692100
Reexamination Certificate
active
06841259
ABSTRACT:
A magnetic thin film with a saturation magnetic flux density of 2 T or more and a coercive force of 2 Oe or less for a magnetic pole material of a recording head. The magnetic thin film consists of an iron carbide film that includes a martensite (α′) phase as the principal phase and at least carbon and iron as constituent elements. The iron carbide film preferably consists of a single α′ phase. The iron carbide film has a body-centered tetragonal structure and a c-axis constitutes an axis of hard magnetization and, a c-plane constitutes a plane of easy magnetization. The axis of hard magnetization constitutes a direction which is generally perpendicular to the film surface, and the plane of easy magnetization constitutes a direction which is generally parallel to the film surface.
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Wiley Encyclopedia of Electrical and Electronics Engineering Online, “Keeper Layered Magnetic Media ” copyright 1999, posted Dec., 27, 1999 Http://www.mrw.interscience.wiley.com/eeee/05/4505/W.45-5-3.
Djayaprawira David
Shoji Hiroki
Takahashi Migaku
Nakarani D. S.
Takahashi Migaku
Uhlir Nikolas J.
Young & Thompson
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