TITLE:
The Process of Dispersing Bismuth Atoms into Iridium via an Intermediate Monolayer of Graphite
AUTHORS:
Arif Orujov, Isfandiyar Aliyev
KEYWORDS:
Surface Ionization, Graphite Monolayer, Intercalation, Diffusion
JOURNAL NAME:
Journal of Modern Physics,
Vol.7 No.1,
January
22,
2016
ABSTRACT: It is first revealed by thermodesorption spectroscopy that when bismuth atoms diffuse the indium atoms through an intermediate graphite layer, they show certain characteristic features. In the Ir (111)-C system at 1400 K δ = 0.4 ± 0.05 and diffusion δBi = Ndif/N = 2.5 × 10-3 bismuth atoms in the Ir(111)-C system. The amount of intercalated and diffused bismuth depends on the electrical field, i.e., on the positive potential in the Ir(111)-C system. It has been noted that a considerable diffusion of bismuth into iridium started at 180 V and increased up to 3000 V. The activation energies for bismuth diffusion into and from iridium were calculated to be En1 = 6.05 ± 0.05 eV and E1n = 6.3 ± 0.1 eV, respectively.