Surface structure and stability of a tin-covered tungsten tip as observed in a field ion microscope
- 1 September 1975
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 46 (9) , 4064-4068
- https://doi.org/10.1063/1.322111
Abstract
The deposition of tin on a tungsten emitter tip and subsequent heating above 700 °C results in a drastic change of the equilibrium shape of the emitter at an elevated temperature and the formation of a surface layer with unusual structure. The new surface layer requires a significantly higher external electric field to cause the migration of surface atoms than a bare tungsten surface layer. A tentative explanation is the formation of a closely packed two‐dimensional alloy of transition and nontransition metals.This publication has 8 references indexed in Scilit:
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