کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5426543 1395890 2007 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Initial oxidation of Ni(1 1 1) observed by electron emission microscopy: PEEM and MEEM
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Initial oxidation of Ni(1 1 1) observed by electron emission microscopy: PEEM and MEEM
چکیده انگلیسی

The initial oxidation of Ni(1 1 1) in the temperature range of 550-700 K has been monitored by photoelectron emission microscopy (PEEM) and metastable-atom electron emission microscopy (MEEM). The PEEM and MEEM images show uniform patterns for the chemisorbed overlayer, reflecting the electronic homogeneity as seen at the μm scale. During the nucleation and lateral growth of oxide, however, the μm-scale pattern due to the formation of oxide domains appears and its evolution depends strongly on the substrate temperature and dose pressure of gaseous O2. Our data indicate that the high-temperature oxidation is regarded as a successive multi-nucleation process in a reaction-diffusion field.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface Science - Volume 601, Issue 18, 15 September 2007, Pages 3988-3991
نویسندگان
, , , ,