کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1674766 1008970 2007 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Surfactant-induced layered growth in homoepitaxy of Fe on Fe(100)–c(2 × 2)O reconstruction surface
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Surfactant-induced layered growth in homoepitaxy of Fe on Fe(100)–c(2 × 2)O reconstruction surface
چکیده انگلیسی

In this study, the effects of several surfactants (Pb, Bi, and Ag) on the homoepitaxial growth of Fe(100) were studied and compared. The reflection high-energy electron diffraction measurements clearly reveal that these surfactants enhance the layer-by-layer growth of Fe on an Fe(100)–c(2 × 2)O reconstruction surface. The dependence of growth on the surfactant layer thickness suggests that there exists a suitable amount of surfactant layer that induces a smoother layer-by-layer growth. Comparisons between the atomic force microscopy images reveal that the root-mean-square surface roughness of Fe films mediated by Pb and Bi surfactants are considerably smaller than those of the films mediated by Ag surfactant. The Auger electron spectra show that Pb and Bi segregate at the top of the surface. It has been concluded that Pb and Bi are effective surfactants for enhancing layer-by-layer growth in Fe homoepitaxy. Ag has the same effect, but it is less efficient due to the weak surface segregation of Ag.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin Solid Films - Volume 515, Issue 18, 25 June 2007, Pages 7203–7208
نویسندگان
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