The CSS Performance of Low Glide Height Head-Disk Interface for High-Performance Disk Drives

• Main Authors: Shih-Che Tzeng, 曾士哲
• Other Authors: Tze-Chi Hsu
• Format: Others
• Language: zh-TW
• Published: 2003
• Online Access: http://ndltd.ncl.edu.tw/handle/19909587536929919358

碩士 === 元智大學 === 機械工程學系 === 91 === The present objective of the research is to get the high density recording system. However, a higher recording density requires smaller head-disk spacing, and therefore lowering-flying heads and smoother disk surfaces are needed. Due to the lowered fly height of the slider, glide avalanche requirements of the disks are consequently being tightened while the stiction requirement remain unchanged. In this article, the limitations of padded slider to meet stiction requirement on low glide height media tribology issue were investigate. In order to meet the glide avalanche requirement, to change the laser energy and its size of the laser texturing machine to get a concaved laser bump geometry, it can be seen that such design can get lower glide height but higher stiction. Therefore , to get the optimal design of such head/disk interface to get lower stiction is necessary. In the research, we observed that smaller bump spacing, bigger bump diameter, lower concave depth and fewer lubricant apply can reduce the contact area and meniscus of the head/disk interface, and exhibits better CSS performance in the test. In terms of the stiction model, it can be seen that more uniform asperity height distribution and lower lubricant tensor can get lower stiction force., Hence the better understood CSS technology is expected to be further extended into future high-performance disk drives.