Mt. Butterfield et Md. Crapper, Extended X-ray absorption fine structure investigation of the structure ofiron overlayers on Cu(111), SURF SCI, 454, 2000, pp. 719-722
Surface extended X-ray absorption fine structure (SEXAFS) has been used to
probe the structure of ultrathin films of iron on Cu(111), With increasing
film thickness, the interatomic separation falls from 2.57 Angstrom rapidly
towards that of bulk iron (2.48 Angstrom). The degree of order and coordin
ation in the films also fall over this region. These changes are consistent
with a loss of face-centred cubic structure. However, the structure does n
ot exhibit a clear body-centred cubic SEXAFS fingerprint until around eight
layers. (C) 2000 Elsevier Science B.V. All rights reserved.