Determination of grain boundary conductivity using distribution function of relaxation times (DFRT) analysis at room temperature in 10a mol% Gd doped ceria: A non-classical electrostrictor
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- @Article{PAUL:2019:SSI,
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author = "Tanmoy Paul and Nimrod Yavo and Igor Lubomirsky and
Yoed Tsur",
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title = "Determination of grain boundary conductivity using
distribution function of relaxation times {(DFRT)}
analysis at room temperature in 10a mol% Gd doped
ceria: A non-classical electrostrictor",
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journal = "Solid State Ionics",
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volume = "331",
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pages = "18--21",
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year = "2019",
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keywords = "genetic algorithms, genetic programming, Impedance
spectroscopy, DFRT, Grain boundary properties, Doped
ceria",
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ISSN = "0167-2738",
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DOI = "doi:10.1016/j.ssi.2018.12.013",
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URL = "http://www.sciencedirect.com/science/article/pii/S016727381830866X",
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abstract = "The electrical conductivity of Ce0.90Gd0.10O1.95 oxide
ion conductor is studied, emphasizing distribution
function of relaxation times (DFRT) analysis of
impedance spectroscopy measurements. The corresponding
powder has been prepared by co-precipitation method and
sintered at 1300 degreeC. The formation of the fluorite
phase is confirmed by X-ray diffraction. The
temperature dependence of ionic conductivity has been
studied at different bias voltages. The impedance
spectra are analysed by impedance spectroscopy genetic
programming (ISGP) that finds an analytic form of the
DFRT. Interestingly, both the grain and grain boundary
conductivities can be identified at room temperature by
analysing the DFRTs. At higher temperatures and higher
bias voltages, the grain boundary diffusion process of
oxygen ions is identified. Both the grain and grain
boundary activation energies are bias independent",
-
keywords = "genetic algorithms, genetic programming, Impedance
spectroscopy, DFRT, Grain boundary properties, Doped
ceria",
- }
Genetic Programming entries for
Tanmoy Paul
Nimrod Yavo
Igor Lubomirsky
Yoed Tsur
Citations