Stock material or miscellaneous articles – Magnetic recording component or stock – Magnetic head
Reexamination Certificate
2007-10-30
2007-10-30
Bernatz, Kevin M. (Department: 1773)
Stock material or miscellaneous articles
Magnetic recording component or stock
Magnetic head
C428S815200, C428S816000, C428S692100, C428S693100, C360S110000, C360S125020, C360S125330, C360S125330
Reexamination Certificate
active
10659119
ABSTRACT:
A soft magnetic film of the present invention is a plated film composed of Co and Fe, and columnar crystals extending in the film thickness direction are provided. In the present invention, columnar crystals extending in the film thickness direction are provided so that an improvement in the surface roughness of the film surface and an improvement in the corrosion resistance can be achieved. Furthermore, the saturation magnetic flux density Bs can also be improved by making the crystal fine and eliminating the need for addition of the noble metal element. That is, according to a CoFe alloy of the present invention, both the corrosion resistance and the saturation magnetic flux density Bs can be improved, and specifically, the above-mentioned saturation magnetic flux density Bs can be increased to 2.35 T or more.
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Kanada Yoshihiro
Kawasaki Mitsuo
Yazawa Hisayuki
Alps Electric Co. ,Ltd.
Bernatz Kevin M.
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