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@ARTICLE{Rodenbcher:878041,
author = {Rodenbücher, Christian and Wrana, Dominik and Gensch,
Thomas and Krok, Franciszek and Korte, Carsten and Szot, K.},
title = {{T}he {E}lectronic {P}roperties of {E}xtended {D}efects in
{S}r{T}i{O}3—{A} {C}ase {S}tudy of a {R}eal {B}icrystal
{B}oundary},
journal = {Crystals},
volume = {10},
number = {8},
issn = {2073-4352},
address = {Basel},
publisher = {MDPI},
reportid = {FZJ-2020-02597},
pages = {665 -},
year = {2020},
abstract = {This study investigates the impact of extended defects such
as dislocations on the electronic properties of SrTiO3 by
using a 36.8° bicrystal as a model system. In order to
evaluate the hypothesis that dislocations can serve as
preferential reduction sites, which has been proposed in the
literature on the basis of ab initio simulations, as well as
on experiments employing local-conductivity atomic force
microscopy (LC-AFM), detailed investigations of the
bicrystal boundary are conducted. In addition to LC-AFM,
fluorescence lifetime imaging microscopy (FLIM) is applied
herein as a complementary method for mapping the local
electronic properties on the microscale. Both techniques
confirm that the electronic structure and electronic
transport in dislocation-rich regions significantly differ
from those of undistorted SrTiO3. Upon thermal reduction, a
further confinement of conductivity to the bicrystal
boundary region was found, indicating that extended defects
can indeed be regarded as the origin of filament formation.
This leads to the evolution of inhomogeneous properties of
defective SrTiO3 on the nano- and microscales.},
cin = {IEK-14 / IBI-1},
ddc = {540},
cid = {I:(DE-Juel1)IEK-14-20191129 / I:(DE-Juel1)IBI-1-20200312},
pnm = {135 - Fuel Cells (POF3-135)},
pid = {G:(DE-HGF)POF3-135},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000564752700001},
doi = {10.3390/cryst10080665},
url = {https://juser.fz-juelich.de/record/878041},
}