Simulation of HAMR / Thermal Flying Height Control Sliders
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چکیده
منابع مشابه
Numerical simulation of thermal flying height control sliders in heat-assisted magnetic recording
Heat assisted magnetic recording (HAMR) is one of the most promising techniques to extend the recording density in hard disk drives beyond 1 Tb/in. Although the diameter of the spot on the disk that is heated by the laser beam is very small, on the order of nanometers, high local temperatures on the disk and the heat dissipated in the slider during the light delivery process can cause thermal d...
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A time-dependent numerical simulation procedure is implemented to simulate the flying height response of a typical thermal flying height control (TFC) slider as a function of the power input to the heater element. The Reynolds equation is used in conjunction with a TFC slider finite element model to determine the change in the thermal protrusion and flying height of the slider. The power input ...
متن کاملContact and Temperature Rise of Thermal Flying Height Control Sliders in Hard Disk Drives
Contact behavior of thermal flying height control sliders and interfacial temperature rise upon head disk contact is investigated utilizing the resistance change of the read and write element. To achieve contact, the heater element of a TFC slider is energized with constant and square wave input profiles. To estimate the temperature rise during head disk contact, the resistance change of the re...
متن کاملServo signal processing for flying height control in hard disk drives
A novel method of measuring the relative headmedium spacing based on a measurement in the servo sectors is developed and simulated using a read back signal model. The spacing measurement is tested experimentally on a spin stand where the flying height is varied using the resistance heater element in a thermal flying height control slider. In addition, voltage step response measurements were obt...
متن کاملServo Signal Data Processing for Flying Height Control in Hard Disk Drives
In recent years, thermal actuated flying height control has been implemented in Hard Disk Drives (HDD) to reduce the effect of flying height variations due to manufacturing tolerances or write current introduced pole tip protrusion (Fig. 1). A stable low flying height is necessary to achieve low bit error rates (BER) [1]. Thermal flying height control is used in a “static manner” in current dis...
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تاریخ انتشار 2011