Qingkang Liu, Zhen Chen, Xiaohong Zhu, G. Wang, Liang Peng, Yufei Hu
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Molecular dynamic simulation on the adsorption between D-4OH lubricant and amorphous carbon film for HAMR disk
Heat-assisted magnetic recording (HAMR) is a revolutionary technology that can increase the capacity of disks. The development of HAMR technology has put forward higher requirements on the thermal stability of lubricants and the adsorption performance between the lubricants and amorphous carbon (a-C) films. Function-alization of the lubricants strongly affected the desorption performance of the lubricants on the disk surface [1]. The adsorption films of D-4OH lubricants exhibited a monolayer structure [2]. Smith et al. [3] found a superior intermolecular interaction between lubricant end groups. Yang et al. [4] found lubricants accumulation on the surface of the medium during laser off in HAMR writing operations. Revealing the adsorption mechanism of D-4OH lubricant on the surface of a-C films can facilitate the development of HAMR technology.
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