Adsorption of vanadium atoms on some tungsten faces

Journal Article · Wed Sep 01 00:00:00 EDT 1976 · Sov. Phys. - Solid State (Engl. Transl.); (United States)

OSTI ID:7230893

Burmistrova, O P; Vladimirov, G G; Shakirova, S A

An investigation was made of the change in the work function ..delta..phi due to the adsorption of vanadium atoms on the (011), (121), (111), (012), and (023) faces of tungsten. The change was determined as a function of the concentration theta of the adsorbed atoms. The dependence ..delta..phi (theta) was influenced strongly by the crystallographic structure of the substrate and it became more complex for faces with higher Miller indices. The appearance of a maximum and a minimum of phi was attributed to a ''smoothing'' of the electron density. A correlation was found between the dependence ..delta..phi (theta) and the change in the preexponential factor in the Fowler-Nordheim equation, which was due to the scattering by charged centers resulting from the smoothing of the electron density.

• Research Organization: A. A. Zhdanov State University, Leningrad
• OSTI ID: 7230893
• Journal Information: Sov. Phys. - Solid State (Engl. Transl.); (United States), Journal Name: Sov. Phys. - Solid State (Engl. Transl.); (United States) Vol. 18:9; ISSN SPSSA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ADSORPTION
CORRELATIONS
ELECTRON DENSITY
ELEMENTS
METALS
MILLER INDICES
REFRACTORY METALS
SORPTION
SORPTIVE PROPERTIES
SURFACE PROPERTIES
TRANSITION ELEMENTS
TUNGSTEN
VANADIUM
WORK FUNCTIONS