Title:
PERPENDICULAR MAGNETIZATION FILM AND MAGNETIC RECORDING MEDIUM
Document Type and Number:
Japanese Patent JP3150401
Kind Code:
B2
Abstract:
PURPOSE: To obtain an excellent perpendicular magnetization film by laminating a specified number of laminated layers of a magnetic layer and a noble metallic layer and allowing the film thickness to be less than a specified thickness.
CONSTITUTION: The magnetic layer M and the noble metallic layer N are alternately laminated and when the laminated number is n and the laminated state is expressed in a formula I, an n value is made to 1≤n≤5 and a film thickness of (M/N)n is made to ≤50&angst . Besides when a thickness of the magnetic layer M is tM, and a thickness of the noble metallic layer N is tN, a value of a film thickness ratio (tM/tN) per one layer is made to 0.6≤tM/tN. Thus by laminating the perpendicular magnetization film via a nonmagnetic layer, a ratio being occupied with the magnetic layer as the whole laminated film becomes larger, so the film is favorable in the case using a magneto-optical effect, especially a Faraday effect.
Inventors:
Susumu Hashimoto
Keiichiro Yusu
Koichiro Inomata
Keiichiro Yusu
Koichiro Inomata
Application Number:
JP4586892A
Publication Date:
March 26, 2001
Filing Date:
March 04, 1992
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
G11B11/105; G11B5/64; G11B5/65; G11B5/66; G11B5/673; G11B5/738; G11B11/10; (IPC1-7): G11B5/673; G11B11/105
Domestic Patent References:
| JP2235215A | ||||
| JP3235237A | ||||
| JP3252942A | ||||
| JP4274039A | ||||
| JP4167406A |
Attorney, Agent or Firm:
Hideaki Togawa