Atomic force microscopy of ultraviolet-induced surface erosion on potassium iodide
- 1 March 1994
- journal article
- desorption
- Published by Taylor & Francis in Radiation Effects and Defects in Solids
- Vol. 128 (1-2) , 79-88
- https://doi.org/10.1080/10420159408218858
Abstract
Ultraviolet laser radiation (Ti: sapphire 4th harmonic) tuneable in the exciton absorption region of KI was used to produce near-surface excitation of potassium iodide samples on the stage of an atomic force microscope. Surface images with lateral resolution of ∼50 nm and vertical resolution of ∼3 nm have been recorded versus exposure to 5.9-eV light. Ultraviolet exposures in air were made both during AFM scanning and with the tip disengaged. Circular pits of a size dependent on uv intensity are formed quickly, followed by appearance of islands ascribed to potassium (oxidized), and finally formation of a rough eroded surface, which continues to develop after termination of the uv irradiation. Thallium doping slows the rate of erosion.Keywords
This publication has 22 references indexed in Scilit:
- Hot holes in irradiated ionic solidsRadiation Effects and Defects in Solids, 1994
- True Atomic Resolution by Atomic Force Microscopy Through Repulsive and Attractive ForcesScience, 1993
- Theoretical studies of atomic emission and defect formation by electronic excitation at the (100) surface of NaClPhysical Review B, 1993
- Defects in alkali halides: atomic force microscopy, cluster spectroscopy, and ultrafast time resolutionNuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1992
- New mechanism for electron-stimulated desorption of nonthermal halogen atoms from alkali-halide surfacesPhysical Review Letters, 1991
- Atomic-force-microscopy observations of tracks induced by swift Kr ions in micaPhysical Review Letters, 1991
- Optical-beam-deflection atomic force microscopy: The NaCl (001) surfaceApplied Physics Letters, 1990
- A theoretical study of desorption induced by electronic transitions in alkali halidesSurface Science, 1989
- Time dependence of desorbed ground-state lithium atoms following pulsed-electron-beam irradiation of lithium fluoridePhysical Review B, 1987
- Defect formation and sputtering of alkali halides with low energy irradiationPhilosophical Magazine, 1971