Simulation of temperature around laser-heating media in heat-assisted magnetic recording |
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Authors: | Guoqing Zhang Hui Li Shengnan Shen Jin Lei Hao Zheng Shijing Wu |
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Affiliation: | 1.School of Power and Mechanical Engineering,Wuhan University,Wuhan,China;2.Western Digital,San Jose,USA |
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Abstract: | Heat-assisted magnetic recording (HAMR) is a new approach, which makes the head write data easily under a low magnetic field using a laser to heat the magnetic media to reduce its coercivity, thus, it is considered to be the next generation of higher recording areal density technology. In this paper, a three-dimensional HAMR finite-element model of hard disk drive (HDD) is developed. The temperature distributions around the laser-heating area on disk surface are investigated when the HDD is filled with air and helium. The cooling effects of the disk rotation and the heat convection in head-disk interface (HDI) are also analyzed. |
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