S1604-1-4 熱アシスト磁気記録におけるヘッドディスクインタフェースに関する研究 : 潤滑膜厚・ボンド率の影響(磁気ヘッド浮上位置決め制御技術)

概要

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In this study, fundamental research on lubricant depletion due to laser heating in thermally assisted magnetic recording was conducted. In particular, the effect of lubricant film thickness as well as lubricant bonded ratio on lubricant depletion was investigated. The conventional lubricant Zdol2000 was used. As a result, it was found that the lubricant depletion characteristics due to laser heating depend largely on the lubricant film thickness and the lubricant film bonded ratio. In addition, it was suggested that the lubricant depletion mechanism involves the evaporation of the mobile lubricant molecules, when the maximum attained temperature is not very high. Another suggested lubricant depletion mechanism involves the thermocapiflary stress effect induced by the disk surface temperature gradient resulting from the non-uniformity of the laser spot intensity distribution.
社団法人日本機械学会の論文
2009-09-12