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首页> 外文期刊>Nanotechnology >Platinum-coated probes sliding at up to 100 mm s~(-1) against coated silicon wafers for AFM probe-based recording technology
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Platinum-coated probes sliding at up to 100 mm s~(-1) against coated silicon wafers for AFM probe-based recording technology

机译：铂涂层探针可在基于AFM探针的记录技术上相对于涂层硅晶片以100 mm s〜（-1）滑动

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摘要

One of the new alternative information storage technologies being researched is based on the probe-based recording technique. In one technique, a phase-change medium is used, and the phase change is accomplished by applying either a high or low magnitude of current which heats the interface to different temperatures. Tip wear is a serious concern. For wear protection of the phase-change chalcogenide medium with a silicon substrate, diamond-like carbon (DLC) film with various lubricant overcoats was deposited on the recording layer surface. Nanowear properties of platinum (Pt)-coated probes with high electrical conductivity have been investigated in sliding against the coated medium using an atomic force microscope (AFM). A silicon grating sample and software to deconvolute tip shape were used to characterize the change in the tip shape and evaluate the tip radius and its wear volume. The nanowear experiments were performed at sliding velocities ranging from 0.1 to 100 mm s~(-1). Pt-coated tips on the lubricant-coated DLC film surfaces showed less sensitivity to the velocity and the load as compared to the unlubricated DLC film surfaces. In wear life threshold experiments, the threshold reaches a smaller sliding distance at higher loads. In high-temperature experiments at 80 deg C, the wear rate is higher compared to that at 20 deg C. The results suggest that the wear mechanism at low velocity appears to be primarily adhesive and abrasive. At high velocity, an additional wear mechanism of the tribochemical reaction is important.
机译：正在研究的新的替代信息存储技术之一是基于基于探针的记录技术。在一种技术中，使用相变介质，并且通过施加高或低幅度的电流来实现相变，该电流将界面加热到不同的温度。烙铁头磨损是一个严重的问题。为了保护具有硅基底的相变硫属化物介质，在记录层表面沉积了具有各种润滑剂保护层的类金刚石碳（DLC）膜。已经使用原子力显微镜（AFM）在相对于涂层介质滑动的情况下研究了具有高电导率的铂（Pt）涂层探针的纳米磨损性能。使用硅光栅样品和用于使尖端形状去卷积的软件来表征尖端形状的变化并评估尖端半径及其磨损量。纳米磨损实验是在0.1至100 mm s〜（-1）的滑动速度下进行的。与未润滑的DLC膜表面相比，涂有润滑剂的DLC膜表面上的Pt涂层的尖端对速度和载荷的敏感性较低。在磨损寿命阈值实验中，阈值在较高负载下达到较小的滑动距离。在80摄氏度的高温实验中，其磨损速率高于20摄氏度的磨损速率。结果表明，低速时的磨损机理主要是粘合剂和磨料。在高速下，摩擦化学反应的附加磨损机理很重要。

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