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@ARTICLE{Wei:889794,
author = {Wei, Xiankui and Jia, Chun-Lin and Roleder, Krystian and
Dunin-Borkowski, Rafal and Mayer, Joachim},
title = {{I}n {S}itu {O}bservation of {P}oint‐{D}efect‐{I}nduced
{U}nit‐{C}ell‐{W}ise {E}nergy {S}torage {P}athway in
{A}ntiferroelectric {P}b{Z}r{O} 3},
journal = {Advanced functional materials},
volume = {31},
number = {13},
issn = {1616-3028},
address = {Weinheim},
publisher = {Wiley-VCH},
reportid = {FZJ-2021-00407},
pages = {2008609 -},
year = {2021},
abstract = {Phase transition is established to govern electrostatic
energy storage for antiferroelectric (AFE)‐type dielectric
capacitors. However, the source of inducing the phase
transition and the pathway of storing the energy remains
elusive so far given the ultrafast charging/discharging
process under normal working conditions. Here, by slowing
down the phase‐transition speed using electron‐beam
irradiation as an external stimulus, the in situ dynamic
energy‐storage process in AFE PbZrO3 is captured by using
atomic‐resolution transmission electron microscopy.
Specifically, it is found that
oxygen‐lead‐vacancy‐induced defect core acts as a seed
to initiate the antiferrodistortive‐to‐ferrodistortive
transition in antiparallel‐Pb‐based structural frames.
Associated with polarity evolution of the compressively
strained defect core, the ferroelectric
(FE)–ferrodistortive state expands bilaterally along the
b‐axis direction and then develops into charged domain
configurations during the energy‐storage process, which is
further evidenced by observations at the ordinary FE states.
With filling the gap of perception, the findings here
provide a straightforward approach of unveiling the
unit‐cell‐wise energy storage pathway in chemical
defect‐engineered dielectric ceramics.},
cin = {ER-C-2},
ddc = {530},
cid = {I:(DE-Juel1)ER-C-2-20170209},
pnm = {535 - Materials Information Discovery (POF4-535) / DFG
project 390534769 - EXC 2004: Materie und Licht für
Quanteninformation (ML4Q) (390534769)},
pid = {G:(DE-HGF)POF4-535 / G:(GEPRIS)390534769},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000607540600001},
doi = {10.1002/adfm.202008609},
url = {https://juser.fz-juelich.de/record/889794},
}