Open AccessA P(2×2) STRUCTURE FORMED BY THE ADSORPTION OF NITROGEN ON Ni(001) SURFACE
Author(s) -
李日升,
屠礼勋
Publication year - 1980
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.29.524
Subject(s) - adsorption , nitrogen , materials science , monolayer , torr , nickel , carbon fibers , oxygen , ion , surface structure , crystal structure , crystallography , chemistry , nanotechnology , metallurgy , composite material , thermodynamics , organic chemistry , physics , composite number
After bombarding the Ni(001) surface by an Ar ion beam with primary energy of 500 eV and beam current of 5 μA in the presence of residual nitrogen under a total pressure of 5×10-5 torr, we have found a P(2×2) structure formed by the adsorption of nitrogen on Ni(001) surface by means of LBED. This is much similar to the structure caused by the adsorption of oxygen or the segregation of carbon with a surface concentration of one quarter monolayer on the same crystal surface. A primary discussion on the nature of nickel-nitrogen bond has been made.