Showing papers in "Surface Science in 1976"

TL;DR: In this article, high-resolution X-ray photoemission of CoO and Co3O4 has been studied and the properties of the Co 2p 3 2, 2p 1 2, and 3s regions, their band shapes and widths, the associated shake-up structure, and the O(1s) and O(2s) BE's were examined.

TL;DR: The H 2 /Pt(111) system has been studied with LEED, ELS, thermal desorption spectroscopy and contact potential measurements as mentioned in this paper, showing that adsorption is completely dissociative with an initial sticking coefficient of 0.1, yielding an atomic H:Pt ratio of about 0.8:1 at saturation.

TL;DR: In this paper, the separate ingredients known to be important in photoemission: band structure, surface effects, matrix elements and scattering of the outgoing wave are drawn together within a single "dynamic" formalism with the objective of finding a rapid method of calculation.

TL;DR: In this article, the adsorption of oxygen on Ag(110), (111), and (100) surfaces has been investigated by LEED, Auger electron spectroscopy (AES), and by the measurement of work function changes and of kinetics, at and above room temperature and at oxygen pressures up to 10−5Torr.

TL;DR: In this paper, it was shown that the separation in energy between the 4σ and 1π peaks of chemisorbed CO varies systematically with the position of the adsorbent in the Periodic Table.

TL;DR: In this article, the role of structural imperfections as active sites in surface reactions was investigated on a step Pt(S)-9 (111) × (111)-surface and showed that the presence of steps increases the initial sticking coefficient by a factor of four to a value of 0.34 and the activity for the H2-d2 exchange reaction is enhanced by an order of magnitude whereby however the apparent activation energy remains constant.

TL;DR: In this paper, a metal-surface selection rule has been used in interpreting infrared spectra from molecules adsorbed on finely-divided metals, which has been shown to be applicable to the case of catalysts with supported etal catalysts.

TL;DR: In this paper, a self-consistently calculated density, potentials, and work functions of thin metal films are calculated with the planar uniform-background model and density functional formalism.

TL;DR: Reflection-adsorption infrared spectroscopy has been combined with thermal desorption and surface stoichiometry measurements to study the structure of CO chemisorbed on a {111}-oriented platinum ribbon under uhv conditions.

TL;DR: In this paper, the formation of metallic adsorption layers was studied in solutions of Cu2+, Bi3+, Pb2+, Tl+ and Sb3+ at (111), (100) and (110) planes of gold single crystal electrodes.

TL;DR: In this article, a tight-binding framework using the bond orbital approximation was proposed to simplify the total energy calculation. But the reconstruction of semiconductor surfaces was not considered, and it was shown that the 7 × 7 reconstruction is a pattern of add-atoms rather than (and topologically unrelated to) a patterns of vacancies.

TL;DR: In this article, the adsorption of Xe and CO on Ag(111) in the range 66 to 123 K and 10 −7 to 10 −1 Pa has been studied by surface potential, low energy electron diffraction (LEED), Auger electron spectroscopy (AES) and electron energy loss spectroscopic (EELS) measurements.

TL;DR: In this paper, a kinetic model has been formulated to describe the time variation of the surface composition during sputtering, and the individual sputter yields for Cu and Ni atoms in the alloy and the depth of the altered layer where the composition is altered by sputtering were determined.

TL;DR: In this paper, the anisotropic work function of smooth (100), smooth (111), and (110) faces of a single crystal were cleaned through a mild cyclic treatment of ion bombardment and annealing.

TL;DR: In this article, the interaction of oxygen with polycrystalline cobalt surfaces has been studied at 300 K (1 × 10−6 to 1 × 10 −5 Torr) using high-resolution (monochromatized) X-ray photoemission.

TL;DR: The authors observed the thermal faceting of MgO (110) and (111) surfaces into sets of (100) faces using LEED and showed that some faceting occurs under ion bombardment at room temperature, and annealing at 900-1400 K by means of electron bombardment produces complete faceting, with facets up to 1 μm across.

TL;DR: In this paper, measurements of segregation isosteres were reported for C to Ni(100) and the model independent isosteric heat of segregation was found to be in agreement with the value derived from coverage versus temperature data using the Langmuir model.

TL;DR: In this paper, the self-imaging of monocrystalline point emitters by the field-evaporation of atoms from their surfaces in a desorption microscope produces patterns containing a great deal of unexpected crystallographically-related structure.

TL;DR: In this article, secondary ion mass spectroscopy (SIMS) was used to investigate the adsorption energy of water on (001) cleavage planes of LiF, NaF and NaCl.

TL;DR: In this article, the scattering of nearly monoenergetic He and Ne atoms of thermal energies from the clean (001) face of LiF at low temperature was investigated using molecular beam techniques, and diffraction peaks were resolved over a wide range of incident and final angles.

TL;DR: In this paper, a comprehensive study of the adsorption of simple molecules on three representative metals of the first row transition metals, namely, polycrystalline Fe and Cu, is presented.

TL;DR: In this paper, an initial sticking coefficient of 0.4 up to coverages of 14 × 1014 O cm 2 was achieved on Pt(110) with a near unity reaction probability with CO and H2.

TL;DR: In this article, the authors studied the adaption of CO on Ni(111) surfaces by means of LEED, UPS and thermal desorption spectroscopy, and showed that the photoemission spectrum exhibits not a simple superposition of the features arising from the single component adsorbates, but a more weakly bound phase characterized by a √7 2 × √ 7 2R19° LEED pattern, interpreted with a hexagonal close-packed arrangement.

TL;DR: In this article, the thermal and electro impact behavior of NO adsorbed on Pt(111) and Pt(110) have been studied by LEED, Auger spectroscopy, and thermal desorption.

TL;DR: In this article, a self-consistent Hartree-Fock-Slater molecular cluster model for the chemisorption of first-row atoms on Ni(100) surfaces is presented.

TL;DR: In this article, the adsorption of oxygen on W(100) single-crystal surfaces is studied by Auger electron spectroscopy (AES), flash desorption, low-energy electron diffraction (LEED), and retarding-field work-function measurements.

TL;DR: In this paper, phase transitions at the surface of magnetic systems and binary alloys and in adsorbed surface layers are studied in terms of both phenomenological theories and the statistical mechanics of simple models.

TL;DR: Nickel surfaces were prepared by a combination of high temperature oxidation, argon ion bombardment and hydrogen reduction as discussed by the authors, and the surface was found to chemisorb oxygen to produce a coverage of 0.014 micro g cm 2 in an ordered c(2 × 2) structure.

TL;DR: In this paper, the structure of the real Ru(101) surface is discussed in relation to three possibilities, which are examined in the light of the available data, and its formation is shown to be consistent with the structure deduced for the ¦11,30¦ phase.