Field desorption of lithium fluoride
- Department of Physics and Astronomy, University of New Mexico, Albuquerque, New Mexico 87131 (United States)
Layers of lithium fluoride (LiF), [similar to]10 nm thick, were field desorbed from iridium substrates at temperatures between 25 and 600 [degree]C. The electric field was increased until desorption of the salt layer occurred. Combined mass spectroscopy and field desorption microscopy characterized the desorption process. During desorption, ions of the form (LiF)[sub [ital n]][center dot]Li[sup +], [ital n]=1--4 are created. The field strength required for desorption is higher at lower temperatures and decreases as the temperature of the substrate is increased. Evidence for a piecewise removal of the LiF layer is presented. For thick salt layers, Li[sup +] ions are frequently detected. An ion production mechanism based on ionic conduction of a salt layer in a high electric field is presented.
- OSTI ID:
- 6450461
- 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. 13:2; ISSN 0734-2101; ISSN JVTAD6
- Country of Publication:
- United States
- Language:
- English
Similar Records
Desorption induced by atomic and molecular ion collisions on LiF
Isothermal ramped field-desorption of water from metal surfaces
Related Subjects
360606 -- Other Materials-- Physical Properties-- (1992-)
665000* -- Physics of Condensed Matter-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALI METAL COMPOUNDS
DESORPTION
ELECTRIC CONDUCTIVITY
ELECTRIC FIELDS
ELECTRICAL PROPERTIES
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
IONIC CONDUCTIVITY
LAYERS
LITHIUM COMPOUNDS
LITHIUM FLUORIDES
LITHIUM HALIDES
MASS SPECTROSCOPY
MICROSCOPY
PHYSICAL PROPERTIES
SORPTION
SPECTROSCOPY
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE
TEMPERATURE RANGE 0273-0400 K
TEMPERATURE RANGE 0400-1000 K