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@ARTICLE{Yoon:16900,
author = {Yoon, S. and Dornseiffer, J. and Xiong, Y. and Grüner, D.
and Shen, Z. and Iwaya, S. and Pithan, C. and Waser, R.},
title = {{S}ynthesis, spark plasma sintering and electrical
conduction mechanism in {B}a{T}i3-{C}u composites},
journal = {Journal of the European Ceramic Society},
volume = {31},
issn = {0955-2219},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {PreJuSER-16900},
pages = {773 - 782},
year = {2011},
note = {This work was supported by the Korea Research Foundation
Grant funded by the Korean Government (KRF-2007-D00124). S.
Yoon acknowledges support from COST Action 539
(COST-STSM-539-03589) of the European Union. NAMICS
Corporation, Niigata (Japan) is gratefully acknowledged for
financial support within a common collaboration project. The
authors are grateful to Dr. Heinz-Josef Penkalla for the
element specific analysis by TEM and to Dr. Detlev Hennings
for helpful discussion and comments.},
abstract = {BaTiO3-Cu composite powders were prepared via an
alkoxide-mediated synthesis approach. As-synthesized BaTiO3
nanoparticles were as small as 40 nm and coated partially
larger Cu particles of approximately 1 mu m in size.
Thermogravimetric analysis (TGA) and dilatometry revealed a
gradual increase in weight loss and retarded shrinkage with
the increase of Cu addition. BaTiO3-Cu composites were
successfully densified by spark plasma sintering (SPS). The
microstructures show an average grain-size for BaTiO3 of
around 100 nm and a crystallite size of about 1 mu m for the
Cu inclusions. The AC conductivity of the BaTiO3-Cu
composites increased with increasing Cu content or with
temperature. The dominant electrical conduction mechanism in
SPSed BaTiO3-Cu composites changed from migration of oxygen
vacancies to band conduction of trapped electrons in oxygen
vacancies with the increase of Cu content. (c) 2010 Elsevier
Ltd. All rights reserved.},
keywords = {J (WoSType)},
cin = {IEK-8 / PGI-7 / JARA-FIT},
ddc = {660},
cid = {I:(DE-Juel1)IEK-8-20101013 / I:(DE-Juel1)PGI-7-20110106 /
$I:(DE-82)080009_20140620$},
pnm = {Atmosphäre und Klima / Grundlagen für zukünftige
Informationstechnologien},
pid = {G:(DE-Juel1)FUEK491 / G:(DE-Juel1)FUEK412},
shelfmark = {Materials Science, Ceramics},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000287389300014},
doi = {10.1016/j.jeurceramsoc.2010.11.012},
url = {https://juser.fz-juelich.de/record/16900},
}