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@ARTICLE{Rodenbcher:837176,
author = {Rodenbücher, Christian and Meuffels, Paul and Speier,
Wolfgang and Ermrich, Martin and Wrana, Dominik and Krok,
Franciszek and Szot, Kristof},
title = {{S}tability and {D}ecomposition of {P}erovskite-{T}ype
{T}itanates upon {H}igh-{T}emperature {R}eduction},
journal = {Physica status solidi / Rapid research letters},
volume = {11},
number = {9},
issn = {1862-6254},
address = {Weinheim},
publisher = {Wiley-VCH},
reportid = {FZJ-2017-06155},
pages = {1700222 -},
year = {2017},
abstract = {Controlling the properties of the surface region of ternary
perovskite-type titanates is of high importance in the field
of future energy and information technologies. A common
method to modify the surface of perovskite oxides such as
SrTiO3 is annealing under vacuum conditions. Here we show
that the local oxygen partial pressure near to the surface
plays a crucial role during annealing. While the oxide is
found to be macroscopically stable during high-temperature
reduction under standard vacuum conditions and only
segregation effects on the nanoscale seem to take place,
surface decomposition due to incongruent sublimation occurs
as soon as an oxygen getter such as Ti is positioned close
to the oxide. In consequence, owing to the high volatility
of Sr-containing species at very low oxygen pressures, a
Sr-depleted TiOx surface layer is formed. This effect might
reveal an alternative possibility to tailor composition and
structure of perovskite-type titanate surfaces.},
cin = {PGI-7},
ddc = {530},
cid = {I:(DE-Juel1)PGI-7-20110106},
pnm = {521 - Controlling Electron Charge-Based Phenomena
(POF3-521)},
pid = {G:(DE-HGF)POF3-521},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000410132200009},
doi = {10.1002/pssr.201700222},
url = {https://juser.fz-juelich.de/record/837176},
}