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@ARTICLE{Bombis:25855,
author = {Bombis, C. and Emundts, A. and Nowicki, M. and Bonzel, D.
I.},
title = {{A}bsolute surface free energies of {P}b},
journal = {Surface science},
volume = {511},
issn = {0039-6028},
address = {Amsterdam},
publisher = {Elsevier},
reportid = {PreJuSER-25855},
pages = {83 - 96},
year = {2002},
note = {Record converted from VDB: 12.11.2012},
abstract = {Three-dimensional (3D) equilibrium crystal shapes (ECS) of
Pb are utilized for the first time to determine absolute
surface free energies via a quantitative evaluation of the
measured ECS and published values of step free energies of
vicinal (1 1 1) surfaces. 3D images of Pb crystallites are
obtained by scanning tunneling microscopy at 323-393 K. Line
scans through high symmetry <1 1 0> azimuths are transformed
into an anisotropic relative surface free energy,
gamma(theta, T). The absolute surface free energy of Pb(1 1
1) is obtained from the limiting slopes, df(theta, T)/d tan
theta, of the orientation dependent f(theta, T) gamma(theta,
T)/ cos theta at the boundaries of the (1 1 1) facet,
located at theta = 0degrees. This value is 25.7 +/- 1.4
meV/Angstrom(2) or 440 +/- 22 mJ/m(2). Absolute surface free
energies of other low-index orientations, such as (1 0 0),
(1 1 0) etc. are calculated from the relative anisotropy of
gamma(theta)/gamma(1 1 1). It is found that surface free
energies of orientation (h k l), expressed in meV/atom,
scale with the number of bonds broken in forming such a
surface. Free energies of steps bounding other facets, such
as (1 0 0), (1 1 0), (1 1 2), (1 1 3) and (2 2 1), are
evaluated in the [0 1 (1) over bar] zone, using the
corresponding facet radii and the absolute surface free
energies of those facets. (C) 2002 Published by Elsevier
Science B.V.},
keywords = {J (WoSType)},
cin = {ISG-3},
ddc = {540},
cid = {I:(DE-Juel1)VDB43},
pnm = {Kondensierte Materie},
pid = {G:(DE-Juel1)FUEK242},
shelfmark = {Chemistry, Physical / Physics, Condensed Matter},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000176584000014},
doi = {10.1016/S0039-6028(02)01554-6},
url = {https://juser.fz-juelich.de/record/25855},
}