Behavior of Ga atoms on a tungsten surface

Journal Article · Fri Nov 01 04:00:00 EST 1985 · J. Vac. Sci. Technol., A; (United States)

DOI:https://doi.org/10.1116/1.572896· OSTI ID:6408452

Kim, H; Okuno, K

The variation of the work function and the preexponential term of the Fowler--Nordheim (FN) plots and field emission current from a Ga covered tungsten surface have been studied using a field emission microscope (FEM). The work function and preexponential terms both vary in the same way with coverage and desorption temperature. Both are decreased to 4.25 and -0.6 eV, respectively, at theta = 0.2. In spite of a small decrease in work function, the field emission current decreased to about half of its initial value, because of a decrease in the emitting areas of the Ga covered tungsten surface. The polarizability of Ga, at this coverage, is also obtained as approx.3 A/sup 3/.

• Research Organization: Department of Electrical Engineering, Nagasaki Institute of Applied Science, Nagasaki, Japan
• OSTI ID: 6408452
• Journal Information: J. Vac. Sci. Technol., A; (United States), Journal Name: J. Vac. Sci. Technol., A; (United States) Vol. 3:6; ISSN JVTAD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ADSORPTION
CURRENTS
DATA
ELECTRIC CURRENTS
ELECTRICAL PROPERTIES
ELEMENTS
EMISSION
EXPERIMENTAL DATA
FIELD EMISSION
FUNCTIONS
GALLIUM
INFORMATION
METALS
NUMERICAL DATA
PHYSICAL PROPERTIES
POLARIZABILITY
SORPTION
SORPTIVE PROPERTIES
SURFACE PROPERTIES
TRANSITION ELEMENTS
TUNGSTEN
WORK FUNCTIONS