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Diamond-Like-Carbon Coating for Heat Assisted Magnetic Recording (HAMR)

Description:

Brief Description

New materials to make advanced recording technology possible

 

Inventor

Robert Carpick (http://carpick.seas.upenn.edu/)

 

Problem

Heat-Assisted Magnetic Recording (HAMR) could provide hard drive storage densities in the TB/in^2 range, as compared to today’s GB/in^2 capability. HAMR operates by heating the disk with a laser, which momentarily changes the storage medium’s magnetic coercivity, allowing data to be written to the disk at a higher density than conventional methods.  Hard disks are currently coated with a protective outer layer of hydrogenated amorphous carbon, which degrades above 150C. Finding a suitable disk coating material that can survive high temperatures without interfering with magnetic recording and data retrieval will be a key enabling technology for HAMR.

 

Solution

Researchers at the University of Pennsylvania have developed a new coating that could provide several advantages for HAMR-enabled hard drives. In this process, a thin (2nm) layer of Silicon Oxide-doped diamond-like carbon (SiO DLC) is deposited onto the disk as a replacement for the amorphous carbon layer. This material is highly temperature resistant and can withstand the temperatures required for HAMR without degrading. This coating is stable up to at least 300C, making it well-suited for HAMR.

 

Advantages

•       Uniform deposition demonstrated on a large (300 mm) surface in the laboratory

•       High temperature resistance up to 300C

•       Improved performance as compared to conventional amorphous carbon coatings

 

Stage of Development

Fabrication method demonstrated in laboratory

 

Intellectual Property

Patent pending

 

Reference Media

N/A

 

Desired partnerships

• License or Sponsored Research  

 

Download PDF

 

Docket #  Y6210

 


Patent Information:
For Information, Contact:
Pamela Beatrice
Director, SEAS/SAS Licensing Group
University of Pennsylvania
215-573-4513
beatricp@upenn.edu
Inventors:
Robert Carpick
Keywords:
Analgesics
Engineering