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@ARTICLE{Neuhaus:838360,
author = {Neuhaus, Kerstin and Eickholt, Sebastian and Maheshwari,
Aditya and Schulze-Küppers, Falk and Baumann, Stefan and
Wiemhöfer, Hans-Dieter},
title = {{A}nalysis of {C}harge {T}ransport in {C}e 0.8 {G}d 0.2-x
{P}r x {O} 2-δ at {T} ≤ 600°{C}},
journal = {Journal of the Electrochemical Society},
volume = {164},
number = {7},
issn = {1945-7111},
address = {Pennington, NJ},
publisher = {Electrochemical Soc.},
reportid = {FZJ-2017-06976},
pages = {H491 - H496},
year = {2017},
abstract = {Doped ceria pellets with the composition
Ce0.8Gd0.2-xPrxO2-δ with x = 0.15, 0.1, 0.05, and 0.03 were
investigated with a special focus on the partial
conductivities in the temperature range of 200–600°C.
Temperature dependent conductivity provided by impedance
spectroscopy in air was compared to measurements of the
oxygen partial pressure dependent electronic conductivity.
The electronic conductivity was analyzed down to 200°C by
using a modified Hebb-Wagner setup with encapsulated Pt
microcontacts. A small polaron hopping process introduced by
reduction of praseodymium was found to have a pronounced
influence on the electronic conductivity at low
temperatures. A splitting of the maximum introduced by
praseodymium small polaron hopping was observed. Especially
for the compositions x ≤ 0.1, a strong deviation of the
electronic conductivity curves from the standard acceptor
doping case was measured due to superimposed electronic
conductivity from the Pr3+/4+ redox reaction.},
cin = {IEK-1},
ddc = {540},
cid = {I:(DE-Juel1)IEK-1-20101013},
pnm = {113 - Methods and Concepts for Material Development
(POF3-113)},
pid = {G:(DE-HGF)POF3-113},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000404397300150},
doi = {10.1149/2.0931707jes},
url = {https://juser.fz-juelich.de/record/838360},
}