Open AccessThe early stages of growth of Mn deposited at room temperature on Ag(001) studied by Mn K ‐edge SEXAFS and Mn L 2 , L 3 ‐edges XAS
Author(s) -
Schieffer P.,
Tuilier M.H.,
Krembel C.,
Hanf M.C.,
Gewinner G.,
Chandesris D.,
Magnan H.,
Hricovini K.
Publication year - 1999
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s090904959801557x
Subject(s) - manganese , materials science , crystallography , enhanced data rates for gsm evolution , analytical chemistry (journal) , chemistry , metallurgy , environmental chemistry , telecommunications , computer science
The atomic structure of the Ag0.5Mn0.5 ordered surface alloy formed in the two topmost layers of the Ag substrate when 1 monolayer (ML) Mn is deposited at room temperature on Ag(001) is determined by using Mn K-edge surface extended Xray absorption fine structure (SEXAFS). The results, which are in agreement with the c(2X2) low energy electron diffraction (LEED) pattern and X-ray photoelectron diffraction (XPD), establishes that Mn adopts here an unusally large atomic volume which is consistent with a large atomic-like moment. The Mn L2L 3 edges soft X-ray absorption spectroscopy (XAS) study of 1ML Mn in-situ deposited confirms that Mn adopts a stable high spin state. For thicker deposits, the growth of a body-centered tetragonal lattice of pure Mn on this diffuse interface is confirmed.