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R&D: Molecular Dynamic Simulation on Thermal Degradation of PFPE Lubricant for HAMR Disk

Understanding thermal degradation mechanism of D-4OH lubricant is beneficial for optimization of HAMR head-disk interface.

IEEE Xplore has published, in 2022 IEEE 33rd Magnetic Recording Conference (TMRC) proceedings, an article written by Qingkang Liu, Kaihao Huang, Xiaohong Zhu, Gang Wang, Ziyue Wang, and Wenkai Wu, School of Energy and Mechanical Engineering, Jiangxi University of Science and Technology, Nanchang, China.

Abstract: In writing process of heat-assisted magnetic recording (HAMR) disk, the pulse laser can cause degradation of PFPE lubricant on the surface of the disk [1], indirectly leading to deterioration of the tribological performance. The degradation of PFPE lubricants under different conditions has been investigated [2]–[3]. However, the thermal degradation mechanism of D-4OH lubricant has not yet been clearly clarified. Understanding the thermal degradation mechanism of D-4OH lubricant is beneficial for the optimization of HAMR head-disk interface (HDI).

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