Abstract
Field ion microscope images of gold hava been obtained employing helium, a 25% neon- helium gas mixture, neon, and argon as imaging gases both with and without prior hydrogen promoted field evaporation of the specimen. The helium images were unstable, while the 25% neon-helium, neon and argon images were quasi-stable at best image field. The 25% neon-helium images had an artifact vacancy concentration of ∼ 10-3 at.fr. in the {210} planes, while the pure neon images exhibited artifact vacancies in every well resolved high index plane. The argon images showed a strong degree of disorder, even though individual atoms were well resolved. A brief discussion of possible mechanisms for artifact vacancy formation in gold is given.
Original language | English (US) |
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Pages (from-to) | 19-31 |
Number of pages | 13 |
Journal | Surface Science |
Volume | 28 |
Issue number | 1 |
DOIs | |
State | Published - Nov 1971 |
Funding
* Research supported by the United States Atomic Energy Commission Contract AT (30-l)-350452. Additional support was received from the Advanced Research Projects Agency through the use of the Central Facilities of the Materials Science Center at Cornell University. ** By quasi-stable we mean that the FIM specimen was always field-evaporating very slowly at best image field (BIF).
ASJC Scopus subject areas
- Condensed Matter Physics
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Materials Chemistry