| Numéro |
J. Phys. Colloques
Volume 50, Numéro C8, Novembre 1989
36th International Field Emission Symposium
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|---|---|---|
| Page(s) | C8-285 - C8-290 | |
| DOI | https://doi.org/10.1051/jphyscol:1989848 | |
36th International Field Emission Symposium
J. Phys. Colloques 50 (1989) C8-285-C8-290
DOI: 10.1051/jphyscol:1989848
Department of Materials Science and Engineering Nagoya Institute of Technology Gokiso-cho, Showa-ku, Nagoya 466, Japan
J. Phys. Colloques 50 (1989) C8-285-C8-290
DOI: 10.1051/jphyscol:1989848
VAPOR-DEPOSITION AND MIGRATION OF IRON ON TUNGSTEN TIPS
H. MORIKAWA, T. HARA, F. IWATSU et T. TERAODepartment of Materials Science and Engineering Nagoya Institute of Technology Gokiso-cho, Showa-ku, Nagoya 466, Japan
Abstract
Field ion microscopic observation was carried out on iron films vapor-deposited onto a tungsten tip from the direction normal to the tip axis. Two kinds of experiments were performed : (i) iron was deposited onto a tip kept at cryogenic temperatures and then heated up to the temperatures 450-750K and (ii) iron was deposited onto a tip at the same temperatures as in (i). The area of the deposited iron images was less than a half of the tip cap in the case (i) and more than a half in the case (ii), probably owing to the momentum carried by the deposited iron atoms.