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@ARTICLE{Bretos:14004,
author = {Bretos, I. and Schneller, T. and Waser, R. and Hennings,
D.F. and Halder, S. and Thomas, F.},
title = {{C}ompositional substitutions and aliovalent doping of
{B}a{T}i{O}3-based thin films on {N}ickel foils prepared by
chemical solutiion deposition},
journal = {Journal of the American Chemical Society},
volume = {93},
issn = {0002-7863},
address = {Washington, DC},
publisher = {American Chemical Society},
reportid = {PreJuSER-14004},
pages = {506 - 515},
year = {2010},
note = {This work was financially supported by BASF SE, Germany.},
abstract = {Several strategies were evaluated focusing on the optimum
reliability of thin-film ceramic capacitors derived from
different compositions based on BaTiO3 (BT) and prepared by
chemical solution deposition onto nickel foils. Film
crystallization was carried out at 800°C under reducing
conditions to prevent the detrimental oxidation of the metal
electrode while allowing the formation of the pure
perovskite phase. In a first approach, compositional
modifiers were introduced into the system, yielding to
Ba(Ti0.7Zr0.3)O3 (BTZ) and (Ba0.7Sr0.3)TiO3 (BST) solid
solutions. Despite the lower permittivities obtained with
respect to pure BT, dielectric losses and leakage current
densities in these films were observed to improve. With the
aim of further optimizing these features, the second
approach focuses on the defect chemistry of BST films by
incorporation of either donor–acceptor cations (Mn2+ and
Nb5+) or single rare-earth elements (Dy3+ or Y3+“magic
ions”) into the perovskite. The leakage conduction in the
associated capacitors is revealed to effectively decrease in
the first case, whereas doping with rare-earth cations does
not substantially improve the dielectric properties of the
ceramics. Processing effects related to the thin-film
configuration, rather distant from the classical scenario
used within the technology of multilayer bulk ceramic
capacitors, also account for the final properties obtained
in the films of this work.},
cin = {IFF-6 / JARA-FIT},
ddc = {540},
cid = {I:(DE-Juel1)VDB786 / $I:(DE-82)080009_20140620$},
pnm = {Grundlagen für zukünftige Informationstechnologien},
pid = {G:(DE-Juel1)FUEK412},
shelfmark = {Materials Science, Ceramics},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000274176500038},
doi = {10.1111/j.1551-2916.2009.03422.x},
url = {https://juser.fz-juelich.de/record/14004},
}