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This digest reports the posture effects on the slider bearing of heat assisted magnetic recording (HAMR) with a direct simulation Monte Carlo (DSMC) method. The pressure distributions acted on the slider surface in a HAMR system with the presence of a heat spot on the disk or high slider temperature are investigated at different pitch angles. The simulation results show that the bearing pressure and...
Fly and lubricant contact, or surfing recording, is one of interface solutions for 5~10 Tb/in2 of magnetic recording. One of major challenges for surfing schemes comes from how to sustain the dynamic stability of the head disk interface (HDI). This paper explores the mechanism of slider's dynamic stability in surfing on the lubricant by means of an analytical model including air bearings, surface...
The work done by various forces acting on the air bearing slider are analyzed and calculated, and their contributions to the flying stabilities of a sub-5 nm air bearing slider are evaluated quantitatively. It is found that the air bearing force plays an important role on the slider's flying stabilities, while the intermolecular force and the friction force tend to excite the slider bouncing.
This paper presents a simulation study on the coupling effects of air bearing dynamics and suspension vibrations due to slider-disk contact or disk waviness. A simulator is developed to include the interactions between the air bearing, the slider-suspension assembly and slider-disk contact by considering the suspension, slider and air bearing as a whole system. From the simulation, the dynamic motion...
The flying stability of a thermal actuated slider is simulated. Its static flying height is not sensitive to short range interactions. Although its flying height vibration induced by a shock is relative larger, it can stand for a larger shock to achieve stable flying height comparing to a normal slider with same flying height The thermal actuated slider is especially suitable for ultra low flying...
This paper presents a simulation study on the dynamic behavior of a femto slider in contact with the disk. A simulator is developed to calculate the interactions between the air bearing dynamics and vibrations of the slider-suspension assembly. The dynamic response of read/write head in both flying-height (FH) and off-track directions due to the slider-disk contacts can be obtained with this simulator...
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