کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5426841 1395908 2006 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Temperature- and coverage-dependent evolution of the Au/Pd(1 1 0) surface structure
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Temperature- and coverage-dependent evolution of the Au/Pd(1 1 0) surface structure
چکیده انگلیسی

The morphology and the atomic scale structure of thin gold films (up to 2.5 ML) on Pd(1 1 0) were studied by means of scanning tunneling microscopy and surface X-ray diffraction. At room temperature the films exhibit a multilayer growth mode accompanied by the formation of highly anisotropic islands. Annealing above 500 K significantly increases the smoothness of the gold films, which are in registry with the substrate. Above a critical threshold of two monolayers a (1 × 2) missing-row reconstructed film is found. This reconstructed surface is well ordered after annealing at temperatures above 580 K. The specific gold film morphology is envisaged as a way to relax the strain caused by the mismatch between gold and palladium.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface Science - Volume 600, Issue 12, 15 June 2006, Pages 2614-2622
نویسندگان
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