The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 28, 2000
Filed:
Jun. 29, 1998
Applicant:
Inventors:
Assignee:
TDK Corporation, Tokyo, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369 13 ; 4286 / ;
Abstract
A magneto-optical recording medium comprises a substrate, and a magnetic multilayer 4 on a surface side thereof. The magnetic multilayer comprises an amplifying layer A.sub.1 and a recording layer R.sub.2 which are laminated together and are each a magnetic layer. A nonmagnetic intermediate layer I.sub.12 is interleaved between the amplifying layer A.sub.1 and the recording layer R.sub.2 to couple them magnetostatically. The nonmagnetic intermediate layer I.sub.12 is made up of a metal oxide and has a thickness of 2 to 30 nm. The magnetic field intensity needed for magnetic field modulation reading or light modulation reading can be lowered.