A-5 液体メニスカス架橋の破断による潤滑剤ピックアップ特性(口頭発表:ヘッド・ディスク・インターフェイス)

概要

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In recent magnetic storage systems, the spacing between the flying head and the disk has been dramatically decreased to less than 10 nm for realizing ultra-high density recording. Lubricant on the disk is picked-up to the flying head slider due to the intermittent contact between the slider and the disk or due to the condensation of the lubricant vapor. The small amount of the lubricant picked-up to the flying head slider will affect the flying characteristics and the read/write performance. In this study, characteristics of the lubricant pick-up due to the breakage of a liquid meniscus bridge are investigated experimentally and theoretically. It was found that the pick-up volume was affected significantly by the difference of the receding contact angles of two solid surfaces. Theoretical results obtained from a model that the authors proposed showed fairly good agreements with experimental results. The present model is considered to be useful for prediction of the lubricant pick-up characteristics.
2010-03-16