EP0183120A2
Expired / Lapsed
EP
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Magnetic recording member
Assignee: Ulvac Inc
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Filing: 1985-11-11
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Granted: —
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Expires: 2005-11-11
Abstract
Abstract The invention is a magnetic recording member of the type of a magnetic film on the surface of a non-magnetic substrate, said film is represented by a Co-Cr-Ni-composition with high coercive force and high anticorrosive property.
Inventors
- 👤 Kyuzo Nakamura
- 👤 Yoshifumi Ota
- 👤 Taiki Yamada
- 👤 Michio Ishikawa
- 👤 Noriaki Tani
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 07:23
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/62; G11B5/64; G11B5/65; G11B5/656; G11B5/68; G11B5/70; G11B5/706; G11B5/70605; G11B5/70621
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
73 words
A magnetic recording member of the type that a magnetic metallic film is formed, through a Cr film, on a surface of a non-magnetic substrate, characterized in that the magnetic metallic film is one represented by Co x Cr Ni z , and having such a composition ratio thereof in atomic % that i s 0.45 ≦ x < 1.0, 0 < y ≦ 0.25, and x + y + z = 1.
Claim 2
Dependent Claim
73 words
A magnetic recording member of the type that a magnetic metallic film is formed, through a Cr film, on a surface of a non-magnetic substrate, characterized in that the magnetic metallic film is one represented by Co x Cr Ni z , and having such a composition ratio thereof in atomic % that i s 0.45 ≦ x < 1.0, 0 < y ≦ 0.25, and x + y + z = 1.
Claim 3
Dependent Claim
22 words
A magnetic recording member as claimed in claim 1, wherein the magnetic metallic film is nearly Co 0.60, Cr 0.10, Ni 0.30.
References Cited (Backward Citations)
No citation records indexed.
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