Showing papers in "Surface Science in 1977"

TL;DR: In this paper, a semi-theoretical approach was proposed to estimate the surface energy of solids in the absence of direct experimental measurement. But this method was not suitable for the case of high-index surfaces.

TL;DR: The work function at first decreases, exhibits a (temperature-dependent) minimum at θ = 13, attains nearly the value of the clean surface at 12 and again exhibits a second (shallow) minimum around 0.68 as mentioned in this paper.

TL;DR: The core and valence level XPS spectra of FexO (x ~ 0.90-0.95), Fe2O3 (α and γ), Fe3O4; and FeOOH have been studied under a variety of sample surface conditions as discussed by the authors.

TL;DR: In this paper, a unified formalism of surface segregation was proposed for grain boundary segregation based on the reduction in lattice strain energy which accompanies the transfer of misfitting solute atoms from the lattice to the boundary.

TL;DR: In this paper, the vibrational spectra from a variety of mixtures of 12C16O and C16O were investigated and it was shown that there is a strong dipole-dipole coupling interaction between adsorbate molecules in the overlayer, and conclusive evidence that the 35 cm−1 frequency shift observed with increasing coverage for 12C 16O is attributable to coupling.

TL;DR: In this paper, a modulated molecular beam technique, using mass spectrometric detection of desorbed species, has been applied to a study of the kinetics of Ga and As 2 interactions on {100} GaAs surfaces.

TL;DR: In this article, a reduced r -factor r r = r r random where r random is the average value of r for randomly chosen pair of curves is calculated for more than 100 beams from 7 different surface structures and a direct relationship is established between the language of visual evaluation and numerical values of r ϵ.

TL;DR: In this paper, photoelectron spectroscopic studies of Ni(111), Ni(100) and Ni(110) surfaces were conducted to investigate the oxidation process of NiO.

TL;DR: In this article, the adsorption of NO on Pd(111) was studied by means of LEED, UPS and thermal desorption measurements, and the results showed that the strong decrease of the adorption energy was explained in terms of pronounced short-range repulsive interactions between neighbouring adsorbate molecules.

TL;DR: In this paper, three single crystal and two polycrystalline Pt surfaces were studied, one single crystal was cut to expose the smooth, hexagonally close-packed plane of the fee Pt crystal (the (111) surface).

TL;DR: In this paper, the structure, compositions and electron state distributions of clean single crystal faces of titanium dioxide (rutile) were studied using low-energy electron diffraction (LEED), Auger electron spectroscopy (AES), electron energy loss (ELS) and ultraviolet photoemission spectroscopies (UPS).

TL;DR: The surface region of Pd(111) is characterized by three different types of oxygen atoms, which may be distinguished by their thermal, chemical, structural and electronic properties as discussed by the authors.

TL;DR: In this paper, the surface concentration of the segregated nonmetal atoms was observed by AES for different bulk concentrations in dependence of the temperature, and the LEED pattern was also observed during segregation equilibrium at temperatures up to about 750° C.

TL;DR: In this paper, the binding states and sticking coefficients of CO and H2 on clean and oxide covered (111)Pt are examined using flash desorption mass spectrometry and Auger electron spectroscopy (AES).

TL;DR: In this paper, the adsorption, desorption and structural properties of chlorine adlayers on both Cu(111) and Ag(111), have been studied by LEED, Auger, Δϑ, and thermal desoreption measurements, showing that significant depolarisation of the chemisorption bond occurs at high coverages.

TL;DR: Low energy electron diffraction patterns obtained from the (111, (110) and (100) diamond surfaces are presented in this paper. But the surface atomic spacing for the case of no reconstruction is shown to be approximately that of the bulk.

TL;DR: In this paper, flash desorption mass spectrometry and Auger electron spectroscopy were used to compare the binding states, Desorption and adsorption kinetics, and adsorbate densities on the (111, (100), (110, (110), (211), and (210) crystal planes of clean Pt.

TL;DR: The surface structures of twenty-two high Miller index crystal faces of platinum were studied in ultrahigh vacuum (uhv) when clean and in the presence of a monolayer of chemisorbed oxygen or carbon by low-energy electron diffraction (LEED).

TL;DR: The long-range interaction of two adsorbed atoms mediated by the elastic distortion of the substrate is calculated classically for an elastically isotropic substrate as discussed by the authors, where the interaction energy is inversely proportional to the shear modulus of the surface, and it may become quite large near a distortive phase transition.

TL;DR: In this article, the total secondary electron emission spectrum from diamond has been examined, and details of the Auger spectra, characteristic loss spectra and K-level ionisation loss spectrum have been presented.

TL;DR: Work function measurements have been performed on stepped Pt and Au surfaces with (111) terraces and on W surface with (110) terracing as mentioned in this paper. But the work function decreases linearly with increasing step density and depends on the step orientation.

TL;DR: In this paper, a review of desorption methods is presented, with emphasis on the use of temperature programmed Desorption (TPD) and ESD for understanding the bonding of adsorbed species to surfaces.

TL;DR: In this article, a comparison of absolute intensities between CO on Pt(111 and CoE on CoE was made and a perfect agreement was found for the adsorption system.

TL;DR: In this paper, the adsorption of NO on a clean Pt(100) surface was studied by Auger spectroscopy, LEED and ultraviolet and X-ray photoemission spectroscopies (UPS and XPS) at temperatures of 40-400°C.

TL;DR: In this paper, the authors studied the desorption of CO on Co(0001) and on a polycrystalline specimen with an initial sticking probability of 09 and showed that the saturation coverage under UHV conditions corresponds to a well-ordered (√3 × √3)R30° structure.

TL;DR: In this article, the adsorption of CO on Cu(110) has been studied by LEED, surface potentials and infrared spectroscopy, and strong interaction between CO molecules is shown by the spectra of mixtures of 13 CO and 12 CO.

TL;DR: In this paper, the surface oxides on thin (200-250 A) vacuum-deposition titanium films were formed under conditions of linear potential scan in 1 N KClO4, 1 N HCLO4 and 1 n H2SO4, with the higher oxide states predominating on the electrochemically oxidized films.

TL;DR: In this article, the surface diffusion of oxygen on W(110) was studied in the temperature range 760-880°C and for coverages up to one monolayer.

TL;DR: In this article, the results for clean Al(111) and Al(100) faces with oxygen at low pressure near room temperature were compared. And the results showed that the sticking probability of the (111) face decreases rapidly with coverage, while the work function increases slightly, by 0.1 eV at 200 L.