UNEXPECTED EFFECTS OF FORCED HIGH NUCLEATION DENSITIES BY FLASH EVAPORATION OF GOLD ON NaCl and KCl SUBSTRATES
- 1 February 1969
- journal article
- conference paper
- Published by AIP Publishing in Applied Physics Letters
- Vol. 14 (3) , 109-111
- https://doi.org/10.1063/1.1652728
Abstract
Gold was deposited slowly and simultaneously on air-cleaved NaCl and vacuum-cleaved NaCl and KCl crystals, portions of which had been covered with about 20 Å of gold by simultaneous flash deposition prior to the commencement of slow deposition 320°C substrate temperature. The epitaxy of gold on vacuum-cleaved NaCl substrates is enhanced by the higher nucleation density resulting from the flash deposition while the latter causes a deterioration of the epitaxy on both vacuum-cleaved KCl and air-cleaved NaCl substrates. It is proved that no effective substrate contamination results from the flash evaporation. It is suggested that a critical or epitaxial nucleation density exists for each deposit-substrate system.Keywords
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