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@ARTICLE{Bernardo:862220,
author = {Bernardo, M. S. and Jardiel, T. and Caballero, A. and Bram,
Martin and Gonzalez, Jesus and Peiteado, M.},
title = {{E}lectric current activated sintering ({ECAS}) of undoped
and titanium-doped {B}i{F}e{O}3 bulk ceramics with
homogeneous microstructure},
journal = {Journal of the European Ceramic Society},
volume = {39},
number = {6},
issn = {0955-2219},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2019-02563},
pages = {2042 - 2049},
year = {2019},
abstract = {BiFeO3 ceramics have been consolidated applying an electric
current activated/assisted sintering (ECAS) methodology
under different electrical conditions. DC experiments
produce a flash sintering regime by which the bulk
cylindrical specimens densify in a few seconds; however,
this goes together with a strong localization of the current
flow within the material, leading to a dramatic lack of
microstructural and compositional homogeneity. The situation
changes under the alternate field; a more gradual FAST
(Field Assisted Sintering) event is produced which allows
the attainment of an exceptional microstructural homogeneity
through the whole sintered compacts. Upon Ti-doping the
overall diffusivity of the system is delayed but the AC
conditions again yield a remarkable microstructural
homogeneity in the consolidated material, this time even at
the nanoscale level. Accordingly, bulk BiFeO3 ceramics with
homogeneous micro-nanostructure can be successfully prepared
by an ECAS methodology and at lower temperatures and much
shorter times than by conventional solid-state sintering.},
cin = {IEK-1},
ddc = {660},
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:000461530100013},
doi = {10.1016/j.jeurceramsoc.2019.01.045},
url = {https://juser.fz-juelich.de/record/862220},
}