کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1796360 | 1023743 | 2007 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Low temperature growth of Si:Ce thin films with high crystallinity and uniform distribution of Ce grown by solid-source molecular beam epitaxy Low temperature growth of Si:Ce thin films with high crystallinity and uniform distribution of Ce grown by solid-source molecular beam epitaxy](/preview/png/1796360.png)
Diluted magnetic semiconductor (DMS), Si:Ce thin films with the Ce concentration below 0.3 at%, are prepared on (0 0 1) Si substrates by low-temperature molecular beam epitaxy (LT-MBE) method. Since a smooth surface is obtained by optimizing the surface-cleaning processes of Si substrate and the deposition conditions of buffer layer, Si:Ce thin films are able to be grown at the growth temperature of 450 °C. RHEED oscillations are observed at the initial stage of the growth, indicating two-dimensional growth. The LT growth enables to obtaining uniform distribution of Ce in Si without hillock or pit formation. The X-ray diffraction (XRD) patterns reveal that all the films are grown epitaxially on the (0 0 1) Si substrate and no extra diffractions corresponding to the silicide are recognized.
Journal: Journal of Crystal Growth - Volume 307, Issue 1, 1 September 2007, Pages 30–34