Spectroscopic Evidence for the Formation of 3-D Crystallites During Isothermal Heating of Amorphous Ice on PT(111)
作者： I. Waluyo , D. Nordlund , L.-Å. Näslund , H. Ogasawara , L.G.M. Pettersson
DOI: 10.1016/J.SUSC.2008.04.005
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摘要: Abstract The formation of crystalline ice through isothermal heating 80 layers amorphous on Pt(1 1 1) at 150 K is studied using X-ray photoelectron spectroscopy and infrared reflection absorption spectroscopy. An early indicator for inhomogeneous crystallization provided by the uncharacteristically high Pt 4f peak compared with corresponding uniformly thick case. O 1s spectra unambiguously show that first monolayer exposed after multilayer total coverage. Using relative intensities between contributions to spectra, we estimated ∼46% ∼80% vacuum an average crystallite height ∼41 ∼31 equivalent coverage ∼23 ∼7 layers, respectively.
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