| 发明名称 |
Implementing contact sensing with near field transducer (NFT) and in-drive NFT characterization diagnostics in heat-assisted magnetic recording (HAMR) HDD |
| 摘要 |
A method, apparatus, and system for implementing contact sensing are provided using a near field transducer (NFT) and in-drive NFT characterization diagnostics for heat-assisted magnetic recording (HAMR) hard disk drives (HDDs). NFT resistance is monitored and used to determine head to disk contact and spacing. NFT resistance is used to detect NFT head wear. |
| 申请公布号 |
US8908483(B1) |
申请公布日期 |
2014.12.09 |
| 申请号 |
US201414292622 |
申请日期 |
2014.05.30 |
| 申请人 |
HGST Netherlands B.V. |
发明人 |
Ren Shen;Schreck Erhard;Stripe Barry Cushing |
| 分类号 |
G11B11/00 |
主分类号 |
G11B11/00 |
| 代理机构 |
|
代理人 |
Pennington Joan |
| 主权项 |
1. A method for implementing contact sensing for a heat-assisted magnetic recording (HAMR) head for a hard disk drive (HDD) comprising:
providing a main magnetic pole; providing a near field transducer (NFT) proximate to the main magnetic pole; monitoring resistance of said near field transducer (NFT) during writing operation; and using the monitored NFT resistance to determine HAMR head to disk contact and spacing. |
| 地址 |
Amsterdam NL |
