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@ARTICLE{Liu:860281,
author = {Liu, J. and Jin, Lei and Jiang, Z. and Liu, L. and Himanen,
L. and Wei, Jing and Zhang, N. and Wang, D. and Jia, C.-L.},
title = {{U}nderstanding doped perovskite ferroelectrics with
defective dipole model},
journal = {The journal of chemical physics},
volume = {149},
number = {24},
issn = {1089-7690},
address = {Melville, NY},
publisher = {American Institute of Physics},
reportid = {FZJ-2019-01056},
pages = {244122 -},
year = {2018},
abstract = {While doping is widely used for tuning physical properties
of perovskites in experiments, it remains a challenge to
exactly know how doping achieves the desired effects. Here,
we propose an empirical and computationally tractable model
to understand the effects of doping with Fe-doped BaTiO3 as
an example. This model assumes that the lattice sites
occupied by a Fe ion and its nearest six neighbors lose
their ability to polarize, giving rise to a small cluster of
defective dipoles. Employing this model in Monte Carlo
simulations, many important features such as reduced
polarization and the convergence of phase transition
temperatures, which have been observed experimentally in
acceptor doped systems, are successfully obtained. Based on
microscopic information of dipole configurations, we provide
insights into the driving forces behind doping effects and
propose that active dipoles, which exist in proximity to the
defective dipoles, can account for experimentally observed
phenomena. Close attention to these dipoles is necessary to
understand and predict doping effects},
cin = {ER-C-1},
ddc = {530},
cid = {I:(DE-Juel1)ER-C-1-20170209},
pnm = {143 - Controlling Configuration-Based Phenomena (POF3-143)},
pid = {G:(DE-HGF)POF3-143},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:30599744},
UT = {WOS:000454626000026},
doi = {10.1063/1.5051703},
url = {https://juser.fz-juelich.de/record/860281},
}