Title:
【発明の名称】二層膜構造の光磁気記録膜及びこれを採用した光磁気ディスク
Document Type and Number:
Japanese Patent JP3068796
Kind Code:
B2
Abstract:
A magneto-optical recording layer having a double-layer structure of a first magnetic layer made of an amorphous alloy of a light rare earth-transition metal and a semi-metal, and a second magnetic layer made of an amorphous alloy of a heavy rare earth-transition metal, and a magneto-optical disk adopting the magneto-optical recording layer. In the magneto-optical recording layer, a p-d electron orbit coupling is induced between the transition metal and the semi-metal to reduce the magnetic moment of the amorphous alloy of light rare earth-transition metal without decreasing the magnetic moment of the light rare earth metal, thereby attaining a perpendicular magnetic anisotropy. As a result, a high density magneto-optical recording layer has a double-layer structure including a ferro-magnetic reproducing layer having an excellent magneto-optical characteristic and a ferro-magnetic recording layer having an improved recording stability by an increase of a coercive force, and the double-layer structure is formed on a magneto-optical disk.
Inventors:
Kim Jainaga
Application Number:
JP803497A
Publication Date:
July 24, 2000
Filing Date:
January 20, 1997
Export Citation:
Assignee:
Samsung Electronics Co.,Ltd.
International Classes:
G11B11/10; G11B11/105; C23C14/00; (IPC1-7): G11B11/105; G11B11/105; C23C14/00
Domestic Patent References:
| JP63148447A | ||||
| JP1237945A | ||||
| JP528551A |
Attorney, Agent or Firm:
Masatake Shiga