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@ARTICLE{Rahmani:885495,
author = {Rahmani, Meimanat and Pithan, Christian and Waser, R.},
title = {{E}lectric transport properties of rare earth doped
{Y}bx{C}a1-x{M}n{O}3 ceramics (part {III}: {P}oint defect
chemistry)},
journal = {Journal of the European Ceramic Society},
volume = {40},
number = {5},
issn = {0955-2219},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2020-03876},
pages = {2007 - 2012},
year = {2020},
note = {Kein Post Print verfügbar!},
abstract = {A defect chemical model based on charge neutrality and laws
of mass action is proposed to clarify the details of the
chemistry of point defects for donor-doped YbxCa1-xMnO3.
DC-conductivity measurements were carried out in a wide
range of partial pressure of oxygen p(O2) ≈ 10−1 down to
10-19 MPa at 750⁰C for the first time without
disintegrating the ceramic sample through reduction. A
comparison of the experimental observations and the
theoretical defect chemical models clearly shows the
possibilities for controlling charge carriers in dependence
of partial pressure of oxygen p(O2) and dopant
concentration. The origin of a plateau state, of a drastic
decrease in conductivity in the intermediate and reduction
p(O2) regimes are figured out, respectively. In addition,
the kind and concentration of the electronic and ionic
majority charge carriers are determined and formulated
according to the proposed defect chemical model.
Furthermore, phase transitions were studied in a wide range
of p(O2) at elevated temperatures},
cin = {PGI-7 / JARA-FIT},
ddc = {660},
cid = {I:(DE-Juel1)PGI-7-20110106 / $I:(DE-82)080009_20140620$},
pnm = {524 - Controlling Collective States (POF3-524)},
pid = {G:(DE-HGF)POF3-524},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000518695500026},
doi = {10.1016/j.jeurceramsoc.2019.12.035},
url = {https://juser.fz-juelich.de/record/885495},
}