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@ARTICLE{Ubic:202223,
author = {Ubic, R. and Tolman, K. and Talley, K. and Joshi, B. and
Schmidt, J. and Faulkner, E. and Owens, J. and Papac, M. and
Garland, A. and Rumrill, C. and Chan, K. and Lundy, N. and
Kungl, H.},
title = {{L}attice-constant prediction and effect of vacancies in
aliovalently doped persovskites},
journal = {Journal of alloys and compounds},
volume = {644},
issn = {0925-8388},
address = {Lausanne},
publisher = {Elsevier},
reportid = {FZJ-2015-04512},
pages = {982 - 995},
year = {2015},
abstract = {Processing–structure relationships are at the heart of
materials science, and predictive tools are essential for
modern technological industries insofar as structure
dictates properties. Point defects can have a profound
effect on structure and consequently properties, but their
effect on crystal chemistry is still not generally known or
understood. None of the very few theoretical models which
exist for perovskites are suited to the doped and defective
ceramics most commonly used in commercial devices;
therefore, a new empirical approach is presented here. A
predictive model for the effective size of anions as well as
cation vacancies and ultimately the pseudocubic lattice
constant of such perovskites, based solely on published
ionic radii data, has been developed here. The model can
also be used to derive ionic radii of cations in twelvefold
coordination. Vacancies have an effective size due to both
bond relaxation and mutual repulsion of coordinating anions,
and as expected this size scales with the host cation
radius, but not in a straightforward way. The model is able
to predict pseudocubic lattice constants, calculate the
effective size of anions and cation vacancies, and identify
the effects of both cation ordering and second-order Jahn
Teller distortions. A lower limit on the tolerance factor of
stable oxide perovskites is proposed.},
cin = {IEK-9},
ddc = {670},
cid = {I:(DE-Juel1)IEK-9-20110218},
pnm = {131 - Electrochemical Storage (POF3-131)},
pid = {G:(DE-HGF)POF3-131},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000357143900138},
doi = {10.1016/j.jallcom.2015.04.213},
url = {https://juser.fz-juelich.de/record/202223},
}