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Tribology Letters

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01-12-2008 | Original Paper

A Theoretical Study of Vapor Lubrication for Heat Assisted Magnetic Recording

Authors: Yansheng Ma, Bo Liu

Published in: Tribology Letters | Issue 3/2008

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Abstract

Heat assisted magnetic recording (HAMR) is a promising technique to overcome the superparamagnetic limit to further increase the areal recording density of hard disk drives. However, HAMR brings about serious problems to the slider-disk interface, such as lubricant depletion on disk surface caused by laser heating. It is proposed to overcome the lubricant depletion problem by using vapor lubrication. The lubricant film formation process on disk surface in vapor lubrication is studied theoretically based on fundamental adsorption and desorption theories. The controlling parameters of lubricant film thickness and film formation time are identified. It is found that the lubricant film thickness is controlled mainly by lubricant vapor pressure and molecular weight. The film formation time can be shortened by using low molecular weight lubricant and high temperature lubricant vapor.

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Title: A Theoretical Study of Vapor Lubrication for Heat Assisted Magnetic Recording
Authors: Yansheng Ma
Bo Liu
Publication date: 01-12-2008
Publisher: Springer US
Published in: Tribology Letters / Issue 3/2008
Print ISSN: 1023-8883
Electronic ISSN: 1573-2711
DOI: https://doi.org/10.1007/s11249-008-9383-5

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