Understanding the heat transfer behavior at the nanoscale head–disk interface (HDI) in hard disk drives is crucial for head design, media design, and failure analysis of the current hard disk drive (HDD) industry, especially for the emerging technologies including heat-assisted magnetic recording (HAMR), microwave-assisted magnetic recording (MAMR), and 2-D magnetic recording (TDMR). Previous experimental studies of both static touchdown technique and theoretical developments of the wave-based phonon conduction have shown enhanced heat transfer at the HDI. To better understand the heat transfer behavior across the HDI, a series of the simulation is necessary to connect the theory and the detailed geometric model of the HDI. In this article, we developed a finite-element model to explain the temperature change of the head during a static touchdown experiment. The wave-based phonon conduction theory is integrated into the simulation through iteration. The simulation results trend in agreement with the theoretical development and the experimental results. This simulation strategy can also be implemented for flying heads to predict the heat transfer behavior under HAMR conditions.

中文翻译：

---

基于静态着陆实验的 HDD 磁头-磁盘界面纳米级传热研究

了解硬盘驱动器中纳米级磁头-磁盘界面 (HDI) 的热传递行为对于当前硬盘驱动器 (HDD) 行业的磁头设计、介质设计和故障分析至关重要，尤其是对于包括热-辅助磁记录 (HAMR)、微波辅助磁记录 (MAMR) 和二维磁记录 (TDMR)。先前对静态着陆技术和基于波的声子传导的理论发展的实验研究表明，HDI 的传热增强。为了更好地理解 HDI 的传热行为，需要进行一系列模拟来连接 HDI 的理论和详细几何模型。在本文中，我们开发了一个有限元模型来解释静态着陆实验期间头部的温度变化。通过迭代将基于波的声子传导理论集成到仿真中。模拟结果趋势与理论发展和实验结果一致。这种模拟策略也可以用于飞行头，以预测 HAMR 条件下的传热行为。