Heat-assisted magnetic recording (HAMR) medium including a split heat-sink structure (SHSS)
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 5, 2017
Grant Date -
N/A
app pub date -
Apr 22, 2016
filing date -
Apr 22, 2016
priority date (Note) -
In Force
status (Latency Note)
Importance
|
US Family Size
|
Non-US Coverage
|
|
Patent Longevity
|
Forward Citations
|
Abstract
A heat-assisted magnetic recording (HAMR) medium includes a substrate, a split heat-sink structure (SHSS) and a magnetic recording layer. The SHSS includes a first heat-sink layer disposed on the substrate, a heat-sink break layer (HSBL) disposed on the first heat-sink layer, and a second heat-sink layer disposed on the HSBL. The magnetic recording layer is disposed on the SHSS. The SHSS is configured to enable use of a reduced operating current of the laser while maintaining about the same write performance properties as a thermal barrier layer, heat-assisted magnetic recording (TBLHAMR) medium that includes a thermal barrier layer (TBL) and a heat-sink layer that is greater than about 20% thicker than the thickness of the SHSS. A HAMR data storage device that incorporates the HAMR medium within a HAMR disk, and a method for making the HAMR medium are also described.
First Claim
Other Claims data not available
Family
- No Family data available.
International Classification(s)
- 2016 Application Filing Year
- G11B Class
- 1958 Applications Filed
- 1595 Patents Issued To-Date
- 81.47 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 5 Citation Count
- G11B Class
- 20.67 % this patent is cited more than
- 8 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Mar 5, 2025 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Mar 5, 2029 |