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@ARTICLE{Grieshammer:841165,
author = {Grieshammer, S. and Martin, M.},
title = {{E}ntropies of defect association in ceria from first
principles},
journal = {Physical chemistry, chemical physics},
volume = {19},
number = {43},
issn = {1463-9084},
address = {Cambridge},
publisher = {RSC Publ.},
reportid = {FZJ-2017-08261},
pages = {29625 - 29628},
year = {2017},
abstract = {Defects and their interactions play a crucial role for the
properties of solid state materials. While energies of
defect formation and defect interaction are commonly
calculated from first principles, calculations of
corresponding vibrational entropies in solids are less
common due to the high computational demand. This is in
particular true for defect pairs as the existence of
multiple defects lowers the symmetry of the cell. Here, we
determine the entropies of association of defects in doped
cerium oxide by density functional theory and phonon
calculations. We estimate the importance of the entropic
contribution in the constant volume and constant pressure
case and address the limitations of the calculations. The
small values of the calculated entropies render the accurate
determination difficult. However, even small entropy
contributions could have a significant influence on defect
interactions and ordering at high temperature.},
cin = {IEK-12 / JARA-HPC},
ddc = {540},
cid = {I:(DE-Juel1)IEK-12-20141217 / $I:(DE-82)080012_20140620$},
pnm = {131 - Electrochemical Storage (POF3-131)},
pid = {G:(DE-HGF)POF3-131},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:29083426},
UT = {WOS:000414773100065},
doi = {10.1039/C7CP03817H},
url = {https://juser.fz-juelich.de/record/841165},
}