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一种用于原子探头断层扫描的自动化特定地点的尖端准备方法,使用脚本控制的聚焦离子束/扫描电子显微镜.
Jun Uzuhashi1, Tadakatsu Ohkubo1, Kazuhiro Hono1
1Research Center for Magnetic and Spintronic Materials, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba 305-0047, Japan.
概括
使用聚焦离子束 (FIB) 和扫描电子显微镜 (SEM) 进行原子探头断层扫描 (APT) 的自动化特定地点的尖端准备,提高了材料研究的吞吐量和可靠性.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 分析化学 分析化学
背景情况:
- 原子探头断层扫描 (APT) 是用于纳米级材料分析的强大技术.
- 传统的APT尖端准备是手动的,耗时的,并且可能缺乏可重复性.
- 之前的工作是自动控制尖端形状,但不是特定地点的准备.
研究的目的:
- 开发和演示APT的自动化特定站点的尖端准备方法.
- 为了提高APT样品准备的吞吐量和可靠性.
- 为了能够精确地控制尖端顶部位置,以便进行有针对性的分析.
主要方法:
- 使用脚本控制的聚焦离子束 (FIB) 和扫描电子显微镜 (SEM) 双束系统.
- 开发了一种自动化程序来检测尖端形状和接口位置.
- 实现了用于精确控制尖顶位置的算法.
主要成果:
- 成功地自动化了特定站点的APT尖端准备.
- 在各种材料系统上演示了该程序:Si上的Pt盖,基于InGaN的MQW和GaAs的p-n连接.
- 实现了对尖端顶部位置的精确控制,从而实现了有针对性的分析.
结论:
- 自动化特定站点的尖端准备显著提高APT研究效率和可靠性.
- 开发的方法允许精确准材料中的特定特征或接口.
- 这种进步有助于更系统和高通量APT研究.
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