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arXiv 1502.04832cond-mat.mtrl-sci
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利用原位小角度截面提高俄歇薄膜溅射深度分辨率

Improved Sputter Depth Resolution in Auger Thin Film Analysis Using In Situ Low Angle Cross-Sections

Uwe Scheithauer

摘要:

本文提出了一种利用俄歇微探针测量薄膜系统深度的非常规方法。为了制备原位小角度横截面,样品被适当的掩模部分覆盖。利用该掩模的边缘,样品在俄歇微探针中以接近掠入射的离子溅射。在掩模的阴影中,这产生穿过薄膜系统的低角度横截面。然后,在感兴趣的点处测量常规的深度分布,其中部分薄膜系统仅被薄顶层覆盖。如所证明的,通过该方法可以获得深度分辨率Δ z / z的相当大的改善。

英文摘要:

A none conventional approach for depth profiling of thin film systems with enhanced depth resolution has been developed using standard Auger microprobe instruments. For the preparation of an in situ low angle cross-section, the sample is partly covered by an appropriate mask. Utilising the edge of this mask, the sample is sputtered in the Auger microprobe with ions at nearly grazing incidence. In the shadow of the mask, this produces a low angle cross section through the thin film system. Then, a conventional depth profile is measured at the point of interest where part of the thin film system is covered only by a thin top layer. As demonstrated a considerable improvement of depth resolution delta z / z can be obtained by this method.

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