The Influence of Surface Roughness on the Slider's Performance of Hard Disk Drives
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概要
- 論文の詳細を見る
In hard disk drives, high density recording can only be achieved by providing an ultra-small spacing between the head and the disk. In other words, the slider housing the head at its rear needs to fly as low as possible, and at the same time, excessive head/disk spacing fluctuations should be avoided. This concept is applicable as long as the ABS roughness and the disk surface roughness are much smaller, when compared with the slider/disk spacing. However, the head/disk spacing has entered the level of surface roughness in recent years, and the effects of the roughness can not be ignored any longer and needs to be investigated in detail. The authors observe in their experiments that the roughness of the disk surface may determine whether the specified sliders are fully flying or not, even though all the other experimental conditions are the same. In order to explain such a phenomenon, a probability model is developed for the investigation of the influence of surface roughness on the flying performance and the contact force of the slider. Simulations are conducted on both the contact recording slider and the proximity recording slider, and the results are well coordinated with the reported testing results and the self-conducted testing results. Studies are further extended to the characterization of the roughness of the ABS and the disk surface that may support head/disk spacing between 5nm and 15nm.
- 社団法人電子情報通信学会の論文
- 1999-02-25
著者
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Liu Bo
Data Storage Institute
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Liu Bo
Data Storage Institute 5 Engineering Drive
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Liu B
Data Storage Institute 5 Engineering Drive
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Liu B
Data Storage Institute
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Liu Bo
Data Storage Institute 5 Engineering Drive 1
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HUA Wei
Data Storage Institute
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Gang Sheng
Data Storage Institute
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