کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5368247 | 1388388 | 2010 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Activation of Zr-Co-rare earth getter films: An XPS study Activation of Zr-Co-rare earth getter films: An XPS study](/preview/png/5368247.png)
Thin films of non-evaporable getters are employed in the field of electronic devices packaging, as they provide a simple and effective solution for pumping in sealed applications. In particular thin films of Zr-Co-rare earth alloys deposited by sputtering have been developed for this purpose and successfully employed in industrial applications. In this paper we present an X-ray photoelectron spectroscopy investigation of the effect of thermal activation of the getter from the point of view of the induced surface chemical modification as seen by such a surface sensitive technique. We find that the activation process reflects in a clear reduction of Zr, accompanied by a decrease of the oxygen concentration at surface, which is fully accomplished already at 350 °C; while at 450 °C there is a significant increase of the cobalt concentration at surface.
Journal: Applied Surface Science - Volume 256, Issue 21, 15 August 2010, Pages 6291-6296