在TEM操作下,用于电气偏移的板块的无接安装
Oscar Recalde-Benitez1, Yevheniy Pivak2, Tianshu Jiang1
1Advanced Electron Microscopy Division, Institute of Materials Science, Technische Universität Darmstadt, Peter-Grünberg-Straße 2, Darmstadt 64287, Germany.
一种新的聚焦离子束 (FIB) 样品制备方法使金属绝缘体金属 (MIM) 装置在传输电子显微镜 (TEM) 中进行现场电测. 这种技术确保了用于纳米尺度设备表征的良好的电气连接.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米科学是一个纳米科学.
- 电气工程 电气工程
背景情况:
- 微电子机械系统 (MEMS) 和现场传输电子显微镜 (TEM) 提升了纳米级材料和设备的研究.
- 同时的电气测试和多信号TEM捕获对于纳米电子学至关重要.
- 在现场研究对于开发用于先进计算的金属绝缘体金属 (MIM) 设备至关重要.
研究的目的:
- 介绍一种改进的聚焦离子束 (FIB) 样本准备技术,用于MIM设备的现场TEM电分析.
- 为了克服污染的挑战,并在样本准备过程中确保电气连接.
- 为了证明该方法的有效性,使用可调节电容器 (varactor) 装置.
主要方法:
- 采用了基于FIB的改进方法来准备MIM设备的横截面TEM片.
- 在TEM中安装准备好的板块在基于MEMS的芯片上进行现场电气测试.
- 描述了纳米设备的电响应和电流密度.
主要成果:
- 为各种MIM设备实现了良好的电气连接和操作功能.
- 证明了一种Au/Pt/BaSrTiO3/SrMoO3变压器的干净截面准备.
- 在FIB准备的TEM板上,在0.1V时观察到的电流水平为几十 picoamperes.
- 发现电响应和电流密度与宏观尺度设备密切一致.
结论:
- 开发的FIB样本制备方法对MIM设备的TEM电气特征在现场有效.
- 该技术确保了可靠的电气连接,使纳米尺寸设备结构和功能之间的直接相关性成为可能.
- 这一进步对于下一代MIM系统和纳米电子设备的开发至关重要.
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