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@ARTICLE{Jin:819349,
author = {Jin, Lei and Jia, Chun-Lin and Lindfors-Vrejoiu, Ionela and
Zhong, Xiaoyan and Du, Hongchu and Dunin-Borkowski, Rafal},
title = {{D}irect {D}emonstration of a {M}agnetic {D}ead {L}ayer
{R}esulting from {A}-{S}ite {C}ation {I}nhomogeneity in a
({L}a,{S}r){M}n{O} $_{3}$ {E}pitaxial {F}ilm {S}ystem},
journal = {Advanced materials interfaces},
volume = {3},
number = {18},
issn = {2196-7350},
address = {Weinheim},
publisher = {Wiley-VCH},
reportid = {FZJ-2016-05044},
pages = {1600414 -},
year = {2016},
abstract = {The degradation of the functional properties of epitaxial
oxide films and the performance of related devices have
often been attributed to the presence of so-called
interfacial “dead layers”. Extensive efforts have been
made to understand the origin of such dead layers and to
avoid their formation. However, the results of these efforts
have not been fully satisfactory, largely as a result of the
complex origin of dead layers. Here, the dead layer is
studied in a sample that contains hillocks of nominally
La0.7Sr0.3MnO3 (LSMO) sandwiched between a ferroelectric
PbTiO3 film and a Nb-doped SrTiO3 substrate using
aberration-corrected (scanning) transmission electron
microscopy, nanobeam electron magnetic circular dichroism
spectroscopy, and related techniques. The results here
reveal the presence of a 5 nm thick layer in the LSMO
hillocks, close to the LSMO/Nb-SrTiO3 interface, which
exhibits distinct structural and physical properties. The
atomic, electronic, and magnetic structures and local
chemistry of the interfacial layer are determined. It is
found that octahedral rotations are suppressed in ultrathin
regions at the edges of the hillocks, providing evidence for
a strong effect of the adjacent Nb-SrTiO3 and PbTiO3. The
formation of the dead layer is discussed in the light of
lattice strain and valence changes of Mn ions.},
cin = {PGI-5},
ddc = {540},
cid = {I:(DE-Juel1)PGI-5-20110106},
pnm = {143 - Controlling Configuration-Based Phenomena (POF3-143)},
pid = {G:(DE-HGF)POF3-143},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000386055800017},
doi = {10.1002/admi.201600414},
url = {https://juser.fz-juelich.de/record/819349},
}