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@ARTICLE{Ho:1005298,
author = {Ho, Ping-Luen and Huang, Zhihao and Jin, Lei and Choi,
Si-Young and Dunin-Borkowski, Rafal E and Mayer, Joachim and
Tsang, Shik Chi Edman and Zhong, Xiaoyan},
title = {{A}tomic-{S}cale {D}etermination of {C}ation and {M}agnetic
{O}rder in the {T}riple {P}erovskite {S}r3{F}e2{R}e{O}9},
journal = {Microscopy and microanalysis},
volume = {29},
number = {1},
issn = {1079-8501},
address = {New York, NY},
publisher = {Cambridge University Press},
reportid = {FZJ-2023-01410},
pages = {326 - 333},
year = {2023},
abstract = {Pseudo-cubic (pc) perovskite oxides (ABO3) that can have
different magnetic cations with different types and degrees
of order at B sites have attracted considerable interest as
a result of their tunable magnetic properties. Nanoscale
inhomogeneity in cation order on the B sites can lead to
different magnetic ground states and electronic band
structures in local sample regions. Here, we determine
cation order on the atomic scale in a nanosized Sr3Fe2ReO9
phase that has a 1:2 B-site-ordered triple perovskite
structure using aberration-corrected analytical transmission
electron microscopy (TEM), revealing that the Fe and Re
cations form tripled-layered repeats with
–[Fe–Fe–Re]n– sequences along [111]pc and an
ordering vector of 1/3[111]*. To the best of our knowledge,
this 1:2 B-site-ordered triple perovskite Sr3Fe2ReO9 phase
has not been reported before. Based on a relaxed theoretical
model that is consistent with the experimental images,
density functional theory calculations are performed to
determine the magnetic ground states and exchange parameters
of the newly discovered Sr3Fe2ReO9 phase, in which
nearest-neighbour Fe and Re cations are coupled
antiferromagnetically. This combination of
aberration-corrected analytical TEM and ab initio
calculations provides physical insight into cation order and
magnetic coupling in perovskite oxides at the atomic level.},
cin = {ER-C-1},
ddc = {500},
cid = {I:(DE-Juel1)ER-C-1-20170209},
pnm = {5351 - Platform for Correlative, In Situ and Operando
Characterization (POF4-535) / 3D MAGiC - Three-dimensional
magnetization textures: Discovery and control on the
nanoscale (856538)},
pid = {G:(DE-HGF)POF4-5351 / G:(EU-Grant)856538},
typ = {PUB:(DE-HGF)16},
UT = {WOS:001033590800031},
doi = {10.1093/micmic/ozac011},
url = {https://juser.fz-juelich.de/record/1005298},
}