| Budget Amount *help |
¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2012: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Outline of Final Research Achievements |
Various problems encountered in proximity and asperity contact regime of flying magnetic head in magnetic disk storages were theoretically clarified. Firstly, vibration characteristics of head slider in light contact regime was theoretically explained based on the JKR adhesion theory. Secondly, a new diffusion equation for submonolayer liquid film was developed and it was shown that the replenishment flow of lubricant into a depleted groove can be well evaluated by using this equation. Thirdly, numerical analysis method of elastic contact caused by meniscus adhesion pressure was newly proposed and it was shown that many experimental results were consistently explained by elastic meniscus contact analyis under various conditions of lubricant thickness, asperity radius and elastic modulus. Fourthly, asperity parameter values of current magnetic disks were measured. This is necessary for correct evaluation for asprity adhesion contact characteristics in the head-disk interface.
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