Impedance spectroscopy of Gd-doped ceria analyzed by genetic programming (ISGP) method
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- @Article{Baral:2017:SSI,
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author = "Ashok Kumar Baral and Yoed Tsur",
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title = "Impedance spectroscopy of Gd-doped ceria analyzed by
genetic programming (ISGP) method",
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journal = "Solid State Ionics",
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volume = "304",
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pages = "145--149",
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year = "2017",
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ISSN = "0167-2738",
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DOI = "doi:10.1016/j.ssi.2017.04.003",
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URL = "http://www.sciencedirect.com/science/article/pii/S0167273816309419",
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abstract = "This work presents the distribution function of
relaxation time (DFRT) analysis of Gd doped ceria (GDC)
and cobalt co-doped GDC prepared by precipitation
method. Ionic transport properties and grain-boundary
phenomena are discussed thoroughly based on the DFRT.
The impedance results, especially the bulk and
grain-boundary conductivities ( sigma b and sigma gb)
and activation energies (Eb and Egb) obtained from the
ISGP, are compared with the values obtained from the
Equivalent Circuit Model. Grain boundary space charge
(SC) effects discussed so far in the literature,
generally do not consider the defect interaction
between the oxygen vacancies and acceptor dopants in
ceria and other oxide ion conductors. However, ISGP
study clearly evidence the co-existence of SC effect
and defect association in grain boundary regions, and
both contribute to the grain boundary resistance (Rgb)
at lower temperatures. The effect of sintering aid (Co)
on the grain boundary activity is discussed considering
both phenomena. Lower sintering temperature of the
samples results in a relatively smaller grain boundary
potential (Phi(0)) i.e., 0.15, 0.17 and 0.19 V at 300
degreeC in 0, 1 and 3 molpercent Co co-doped GDC,
respectively.",
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keywords = "genetic algorithms, genetic programming, Impedance
spectroscopy, DFRT, Grain boundary properties, Doped
ceria",
- }
Genetic Programming entries for
Baral Ashok-Kumar
Yoed Tsur
Citations