کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9595216 | 1507970 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Atomic structure of a long-range ordered vicinal surface of SrTiO3
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
We solved the structure of SrTiO3(1Â 0Â 6) by grazing incidence X-ray diffraction and direct methods. The surface exhibits SrO and TiO2 terminated half-steps, which are unstrained and the surface atoms are practically in their bulk-like positions. The resulting wavy surface exhibits an astonishing degree of long-range order, which is established by the alternating, weakly polar surface terminations. Since cation sites are partially occupied toward step edges, the surface is very smooth but lacks short-range order. This is very different from the behavior observed for metal and semiconductor surfaces, where stress resulting from short-range reconstruction is the driving force behind long-range order.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface Science - Volume 589, Issues 1â3, 1 September 2005, Pages 184-191
Journal: Surface Science - Volume 589, Issues 1â3, 1 September 2005, Pages 184-191
نویسندگان
X. Torrelles, J. Zegenhagen, J. Rius, T. Gloege, L.X. Cao, W. Moritz,