Dynamic instability of flying head slider and stabilizing design for near-contact magnetic recording |
| |
Authors: | Kyosuke Ono |
| |
Institution: | Central Research Laboratory, Hitachi Ltd., 1 Kirihara-cho, Fujisawa-shi, Kanagawa-ken 252-8588, Japan |
| |
Abstract: | The dynamic instability of a flying head slider is described, and a design guideline is presented for a slider that can stably fly at a height of less than 5 nm. The current use of shrouded Rayleigh step-bearing slider has been a good way to increase air-bearing stiffness and damping while reducing meniscus adhesion and friction forces, but does not have enough ability to achieve a small flying height less than 5 nm. On the basis of meniscus interfacial force theory, I proposed a spherical pad slider that is inherently stable in the near-contact regime and that has high durability against intermittent contact, which is necessary for future high-density magnetic recording. This design concept is being partly realized by thermal flying height control technique. |
| |
Keywords: | Flying head slider Slider instability Menscus force Shrouded step air-bearing Spherical pad slider Near-contact recording |
本文献已被 ScienceDirect 等数据库收录! |
|