Estimates of the heats of adsorption for Pt and Pd monolayers on Ta(110)

Journal Article · Wed Jan 14 23:00:00 EST 1987 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.35.487· OSTI ID:6974882

Ruckman, M W; Strongin, M

The heats of adsorption for Pt and Pd atoms on a Ta(110) surface were estimated using a procedure suggested by Oelhafen. We were able to relate the heats of adsorption for Pt and Pd on Ta(110) to the Ta 4f, Pt 4f, or Pd 4p core-level shifts and to changes in the center of gravity of Ta, Pt, or Pd valence-band states. We estimate that the heat of adsorption is -0.7 +- 0.2 eV/atom for Pt on Ta(110) and -0.4 +- 0.2 eV/atom for Pd on Ta(110). This work suggests that rough estimates of the thermodynamic parameters for a variety of transition-metal overlayers can be obtained using photoemission.

• Research Organization: Department of Physics, Brookhaven National Laboratory, Upton, New York 11973
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 6974882
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 35:2; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ADSORPTION
ADSORPTION HEAT
ATOMS
BREMSSTRAHLUNG
COHERENT SCATTERING
DATA
DIFFRACTION
ELECTROMAGNETIC RADIATION
ELECTRON DIFFRACTION
ELECTRON SPECTROSCOPY
ELECTRONIC STRUCTURE
ELEMENTS
ENTHALPY
EXPERIMENTAL DATA
FAR ULTRAVIOLET RADIATION
INFORMATION
METALS
NUMERICAL DATA
PALLADIUM
PHOTOELECTRON SPECTROSCOPY
PHYSICAL PROPERTIES
PLATINUM
PLATINUM METALS
RADIATIONS
SCATTERING
SORPTION
SPECTROSCOPY
SUBSTRATES
SYNCHROTRON RADIATION
TANTALUM
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENTS
ULTRAHIGH VACUUM
ULTRAVIOLET RADIATION