Study of palladium mono- and multilayers on Ta(110) between 300 and 1500 K

Journal Article · Wed Jul 01 04:00:00 EDT 1992 · Journal of Vacuum Science and Technology, A (Vacuum, Surfaces and Films); (United States)

DOI:https://doi.org/10.1116/1.578097· OSTI ID:7040671

Ruckman, M W; Jiang, L Q; Strongin, M ^[1]

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1. Physics Department, Brookhaven National Laboratory, Upton, New York 11973 (United States)

Core level photoemission was used to study the growth and thermal modification of Pd films deposited on Ta(110) between 300 and 1500 K. The Ta(110) substrate had Ta 4{ital f} core level spectral components which could be identified with the Ta(110) terrace and edge sites. The deposition of Pd causes a 175{plus minus}100 meV shift of these surface-related core level components. Little or no additional core level shift is seen when the interface is modified by heating. A decrease in the intensity of the bulk Ta 4{ital f} component is observed and is consistent with the growth of a Pd--Ta surface alloy. However, changes in the ratio of the components derived from the edge and terrace sites argue for changes in the size of the Ta(110) terraces due to the preferential growth of the alloy phase at the edges or the development of additional surface facets. These changes in surface morphology appear to be reversed when the Ta substrate becomes hot enough to remove the Pd.

• DOE Contract Number: AC02-76CH00016
• OSTI ID: 7040671
• Journal Information: Journal of Vacuum Science and Technology, A (Vacuum, Surfaces and Films); (United States), Journal Name: Journal of Vacuum Science and Technology, A (Vacuum, Surfaces and Films); (United States) Vol. 10:4; ISSN JVTAD; ISSN 0734-2101
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ADSORPTION
BIMETALS
BREMSSTRAHLUNG
CHEMICAL BONDS
ELECTROMAGNETIC RADIATION
ELECTRON SPECTROSCOPY
ELECTRONIC STRUCTURE
ELEMENTS
ENERGY LEVELS
FILMS
INTERFACES
METALS
MORPHOLOGY
PALLADIUM
PHOTOELECTRON SPECTROSCOPY
PLATINUM METALS
RADIATIONS
SORPTION
SPECTROSCOPY
SYNCHROTRON RADIATION
TANTALUM
TEMPERATURE RANGE
TEMPERATURE RANGE 0273-0400 K
TEMPERATURE RANGE 0400-1000 K
TEMPERATURE RANGE 1000-4000 K
THIN FILMS
TRANSITION ELEMENTS