VERTICAL MAGNETISM RECORDING MEDIUM EQUIPPED WITH MECHANICAL STABILITY AND CORROSION RESISTANCE

Title:

VERTICAL MAGNETISM RECORDING MEDIUM EQUIPPED WITH MECHANICAL STABILITY AND CORROSION RESISTANCE

Document Type and Number:

Japanese Patent JP2008097812

Kind Code:

A

Abstract:

To provide a perpendicular magnetic recording disk with mechanical stability and corrosion resistance.

The perpendicular magnetic recording disk has a granular cobalt alloy recording layer (RL) containing on the "soft" magnetic underlayer (SUL). The SUL is doped with judiciously chosen elements (B, B4C, BN, SiC) or alloys or is capped or intercalated with the elements or metal alloy layers. The resulting disk and the SUL in particular has good recording properties, improved mechanical strength and improved corrosion resistance over a comparable disk without the doping or thin layers.

Inventors:

BRAUNSTEIN DAVID
DAI QING
IKEDA YOSHIHIRO
MARINERO ERNESTO
WANG RUN-HAN

Application Number:

JP2007266654A

Publication Date:

April 24, 2008

Filing Date:

October 12, 2007

Export Citation:

Click for automatic bibliography generation Help

Assignee:

HITACHI GLOBAL STORAGE TECH

International Classes:

G11B5/667

Attorney, Agent or Firm:

Polaire Patent Business Corporation

Previous Patent: READ-OUT METHOD OF DOUBLE JUNCTION MAGNETIC MEMORY DEVICE AND WRITE-IN METHOD TO DOUBLE JUNCTION MAG...

Next Patent: MASTER DISK EXPOSURE METHOD AND PULSE GENERATOR, AND FORMATTER SYSTEM, AND MEDIA