Mixed ionic-electronic conductivity in phases in the praseodymium oxide system

Venkataraman Thangadurai; Robert A. Huggins; Werner Weppner

doi:10.1007/s100080000187

Mixed ionic-electronic conductivity in phases in the praseodymium oxide system

Venkataraman Thangadurai, Robert A. Huggins^*, Werner Weppner

^*Corresponding author for this work

School of Chemistry

Research output: Contribution to journal › Article › peer-review

Abstract

The praseodymium oxide system contains a series of related phases with very narrow compositional width and unique extended defect structures, rather than the more common isolated point defects. The electrical conductivity of three of these phases has been measured by the use of AC complex impedance and DC methods in the temperature range 75-400 °C. The beta phase, Pr₆O₁₁, exhibits a total conductivity of 6.77×10^-2 S/cm at 400 °C, with an activation energy of 0.52 eV/atom. The conductivity of the epsilon phase, Pr₅O₉, is slightly lower, with an activation energy of 0.51 eV/atom. The iota phase, Pr₇O₁₂, has a very low conductivity. The activation energies for electrical transport in the beta and epsilon phases are in the general range found in a number of mixed conductors based upon LSGM oxides.

Original language	English
Pages (from-to)	531-537
Number of pages	7
Journal	Journal of Solid State Electrochemistry
Volume	5
Issue number	7-8
DOIs	https://doi.org/10.1007/s100080000187
Publication status	Published - 2001

Keywords

Electrical properties
Intermediate temperature conductor
Mixed conduction
Oxide ion conduction
Praseodymium oxides

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10.1007/s100080000187

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title = "Mixed ionic-electronic conductivity in phases in the praseodymium oxide system",

abstract = "The praseodymium oxide system contains a series of related phases with very narrow compositional width and unique extended defect structures, rather than the more common isolated point defects. The electrical conductivity of three of these phases has been measured by the use of AC complex impedance and DC methods in the temperature range 75-400 °C. The beta phase, Pr6O11, exhibits a total conductivity of 6.77×10-2 S/cm at 400 °C, with an activation energy of 0.52 eV/atom. The conductivity of the epsilon phase, Pr5O9, is slightly lower, with an activation energy of 0.51 eV/atom. The iota phase, Pr7O12, has a very low conductivity. The activation energies for electrical transport in the beta and epsilon phases are in the general range found in a number of mixed conductors based upon LSGM oxides.",

keywords = "Electrical properties, Intermediate temperature conductor, Mixed conduction, Oxide ion conduction, Praseodymium oxides",

author = "Venkataraman Thangadurai and Huggins, {Robert A.} and Werner Weppner",

year = "2001",

doi = "10.1007/s100080000187",

language = "English",

volume = "5",

pages = "531--537",

journal = "Journal of Solid State Electrochemistry",

issn = "1432-8488",

publisher = "Springer-Verlag",

number = "7-8",

}

TY - JOUR

T1 - Mixed ionic-electronic conductivity in phases in the praseodymium oxide system

AU - Thangadurai, Venkataraman

AU - Huggins, Robert A.

AU - Weppner, Werner

PY - 2001

Y1 - 2001

N2 - The praseodymium oxide system contains a series of related phases with very narrow compositional width and unique extended defect structures, rather than the more common isolated point defects. The electrical conductivity of three of these phases has been measured by the use of AC complex impedance and DC methods in the temperature range 75-400 °C. The beta phase, Pr6O11, exhibits a total conductivity of 6.77×10-2 S/cm at 400 °C, with an activation energy of 0.52 eV/atom. The conductivity of the epsilon phase, Pr5O9, is slightly lower, with an activation energy of 0.51 eV/atom. The iota phase, Pr7O12, has a very low conductivity. The activation energies for electrical transport in the beta and epsilon phases are in the general range found in a number of mixed conductors based upon LSGM oxides.

AB - The praseodymium oxide system contains a series of related phases with very narrow compositional width and unique extended defect structures, rather than the more common isolated point defects. The electrical conductivity of three of these phases has been measured by the use of AC complex impedance and DC methods in the temperature range 75-400 °C. The beta phase, Pr6O11, exhibits a total conductivity of 6.77×10-2 S/cm at 400 °C, with an activation energy of 0.52 eV/atom. The conductivity of the epsilon phase, Pr5O9, is slightly lower, with an activation energy of 0.51 eV/atom. The iota phase, Pr7O12, has a very low conductivity. The activation energies for electrical transport in the beta and epsilon phases are in the general range found in a number of mixed conductors based upon LSGM oxides.

KW - Electrical properties

KW - Intermediate temperature conductor

KW - Mixed conduction

KW - Oxide ion conduction

KW - Praseodymium oxides

U2 - 10.1007/s100080000187

DO - 10.1007/s100080000187

M3 - Article

AN - SCOPUS:0035639212

SN - 1432-8488

VL - 5

SP - 531

EP - 537

JO - Journal of Solid State Electrochemistry

JF - Journal of Solid State Electrochemistry

IS - 7-8

ER -

Mixed ionic-electronic conductivity in phases in the praseodymium oxide system

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