Contribution of lubricant thickness to head-media spacing

被引：21

作者：

Ma, XD ^{[1
]}

Chen, JP ^{[1
]}

Richter, HJ ^{[1
]}

Tang, H ^{[1
]}

Gui, J ^{[1
]}

机构：

[1] Seagate Technol, Fremont, CA 94538 USA

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2001年 / 37卷 / 04期

关键词：

head-disk interface; head-media separation; lubricant; magnetic recording; proximity recording;

D O I：

10.1109/20.950979

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this work, we have studied the effect of lubricant thickness on magnetic recording, specifically, its effect on head-media spacing (HMS). In the experiment, a series of disks were first lubricated to various thicknesses ranging from 20 to 60 Angstrom. Then, read/write recording tests were performed for each disk on one track near the disk OD with variable linear densities. Next, the lubricant was washed off from MD to OD using a solvent, so the thickness of lubricant at the OD track was reduced. The read/write tests showed that the read-back signal was enhanced after lubricant wash-off. Using Wallace's equation, the MIS change was calculated and found to be proportional to the change of the lubricant thickness. This result conclusively establishes that disk lubricant indeed takes up HMS and must be accordingly accounted for in HMS budgeting.

引用

页码：1824 / 1826

页数：3

共 11 条

[1] Texture noise and its impact on recording performance at high recording density [J].