کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5424647 | 1395831 | 2008 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Spectroscopic evidence for the formation of 3-D crystallites during isothermal heating of amorphous ice on Pt(1Â 1Â 1)
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The formation of crystalline ice through isothermal heating of 80 layers amorphous ice on Pt(1Â 1Â 1) at 150Â K is studied using X-ray photoelectron spectroscopy and infrared reflection absorption spectroscopy. An early indicator for inhomogeneous crystallization is provided by the uncharacteristically high Pt 4f photoelectron peak for crystalline ice compared with the corresponding uniformly thick amorphous case. O 1s photoelectron spectra unambiguously show that the first monolayer is exposed after crystallization at multilayer total coverage. Using the relative intensities between the first monolayer and multilayer contributions to the O 1s photoelectron spectra, we estimated that â¼46% and â¼80% of the first monolayer is exposed to vacuum with an average crystallite height of â¼41 and â¼31 layers for an equivalent total coverage of â¼23 and â¼7 layers, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface Science - Volume 602, Issue 11, 1 June 2008, Pages 2004-2008
Journal: Surface Science - Volume 602, Issue 11, 1 June 2008, Pages 2004-2008
نویسندگان
I. Waluyo, D. Nordlund, L.-Ã
. Näslund, H. Ogasawara, L.G.M. Pettersson, A. Nilsson,