J. Phys. Colloques
Volume 50, Numéro C8, Novembre 198936th International Field Emission Symposium
|Page(s)||C8-285 - C8-290|
J. Phys. Colloques 50 (1989) C8-285-C8-290
VAPOR-DEPOSITION AND MIGRATION OF IRON ON TUNGSTEN TIPSH. MORIKAWA, T. HARA, F. IWATSU et T. TERAO
Department of Materials Science and Engineering Nagoya Institute of Technology Gokiso-cho, Showa-ku, Nagoya 466, Japan
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.