کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9572456 | 1503708 | 2005 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Sputter cleaning and annealing of zinc-blende MnTe surface-XPS study
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
This paper, being a complementary one to our earlier report (Chem. Phys. Lett. 387 (2004) 110), presents a detailed description of the surface cleaning method applied for molecular beam epitaxy (MBE)-grown zinc-blende (zb)-MnTe epilayers. In particular, surface compositional changes induced by multistep Ar+ ion sputtering (with beam energy, Ei, fixed between 0.5 and 2.0 keV) and subsequent annealing of zb-MnTe crystal have been studied by using X-ray photoelectron spectroscopy (XPS). It was found that Ar+ ion bombardment with Ei = 1.5 keV appeared as the crucial preparation step (either in multistep- or in post-anneal sputtering), which provided an efficient removal of the surface oxides and contaminants and led to nearly stoichiometric surface composition, namely [Te]/[Mn] = 0.97. Detailed analysis of the Mn 2p core-level spectrum (acquired in Mg Kα mode) for clean zb-MnTe surface exhibited good consistency with the results of the relevant analysis reported earlier (see the reference above).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 249, Issues 1â4, 15 August 2005, Pages 222-230
Journal: Applied Surface Science - Volume 249, Issues 1â4, 15 August 2005, Pages 222-230
نویسندگان
R.J. Iwanowski, M.H. Heinonen, E. Janik,