Electron/hole and ion transport in La1-xSrxFeO3-δ

M. V. Patrakeev; J. A. Bahteeva; E. B. Mitberg; I. A. Leonidov; V. L. Kozhevnikov; K. R. Poeppelmeier

doi:10.1016/S0022-4596(03)00040-9

Electron/hole and ion transport in La_1-xSr_xFeO_3-δ

M. V. Patrakeev, J. A. Bahteeva, E. B. Mitberg, I. A. Leonidov, V. L. Kozhevnikov^*, K. R. Poeppelmeier

^*Corresponding author for this work

Chemistry

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

119 Scopus citations

Abstract

The conductivity of the entire solid solution La_1-xSr_xFeO_3-δ, where x=0.2, 0.4, 0.5, 0.7 and 0.9, in the oxygen partial pressure range 10^-19-0.5atm and temperatures between 750°C and 950°C is reported. The partial contributions from different charge carriers and the energetic parameters governing transport of charged species reveal that the lanthanum-strontium ferrites can be characterized as mixed, ion-electron conductors in the low oxygen pressure/high oxygen deficiency limit. The partial contributions to conductivity from oxygen ions, electrons and holes increase with strontium content and attain maximal values at x=0.5. Further increase in doping results in development of oxygen vacancy ordering phenomena and deterioration of conducting properties.

Original language	English (US)
Pages (from-to)	219-231
Number of pages	13
Journal	Journal of Solid State Chemistry
Volume	172
Issue number	1
DOIs	https://doi.org/10.1016/S0022-4596(03)00040-9
State	Published - Apr 2003

Keywords

Electron conductivity
Lanthanum-strontium ferrite
Oxygen conductivity
Oxygen ordering

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

Access to Document

10.1016/S0022-4596(03)00040-9

Cite this

@article{12da0de3fa9c46fab4d0fc01267a43a8,

title = "Electron/hole and ion transport in La1-xSrxFeO3-δ",

abstract = "The conductivity of the entire solid solution La1-xSrxFeO3-δ, where x=0.2, 0.4, 0.5, 0.7 and 0.9, in the oxygen partial pressure range 10-19-0.5atm and temperatures between 750°C and 950°C is reported. The partial contributions from different charge carriers and the energetic parameters governing transport of charged species reveal that the lanthanum-strontium ferrites can be characterized as mixed, ion-electron conductors in the low oxygen pressure/high oxygen deficiency limit. The partial contributions to conductivity from oxygen ions, electrons and holes increase with strontium content and attain maximal values at x=0.5. Further increase in doping results in development of oxygen vacancy ordering phenomena and deterioration of conducting properties.",

keywords = "Electron conductivity, Lanthanum-strontium ferrite, Oxygen conductivity, Oxygen ordering",

author = "Patrakeev, {M. V.} and Bahteeva, {J. A.} and Mitberg, {E. B.} and Leonidov, {I. A.} and Kozhevnikov, {V. L.} and Poeppelmeier, {K. R.}",

note = "Funding Information: The work is carried out under the contract ♯01-03-96519 with Russian Foundation for Basic Research (RFBR). Authors appreciate partial support of this study by the Commission of RAS for young scientists under award ♯192 of the 6th competition-examination. One of us (K.R.P) is grateful to the EMSI program of the National Science Foundation and the U.S. Department of Energy Office of Science (CHE-9810378) at the Northwestern University Institute for Environmental Catalysis. ",

year = "2003",

month = apr,

doi = "10.1016/S0022-4596(03)00040-9",

language = "English (US)",

volume = "172",

pages = "219--231",

journal = "Journal of Solid State Chemistry",

issn = "0022-4596",

publisher = "Academic Press Inc.",

number = "1",

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TY - JOUR

T1 - Electron/hole and ion transport in La1-xSrxFeO3-δ

AU - Patrakeev, M. V.

AU - Bahteeva, J. A.

AU - Mitberg, E. B.

AU - Leonidov, I. A.

AU - Kozhevnikov, V. L.

AU - Poeppelmeier, K. R.

N1 - Funding Information: The work is carried out under the contract ♯01-03-96519 with Russian Foundation for Basic Research (RFBR). Authors appreciate partial support of this study by the Commission of RAS for young scientists under award ♯192 of the 6th competition-examination. One of us (K.R.P) is grateful to the EMSI program of the National Science Foundation and the U.S. Department of Energy Office of Science (CHE-9810378) at the Northwestern University Institute for Environmental Catalysis.

PY - 2003/4

Y1 - 2003/4

N2 - The conductivity of the entire solid solution La1-xSrxFeO3-δ, where x=0.2, 0.4, 0.5, 0.7 and 0.9, in the oxygen partial pressure range 10-19-0.5atm and temperatures between 750°C and 950°C is reported. The partial contributions from different charge carriers and the energetic parameters governing transport of charged species reveal that the lanthanum-strontium ferrites can be characterized as mixed, ion-electron conductors in the low oxygen pressure/high oxygen deficiency limit. The partial contributions to conductivity from oxygen ions, electrons and holes increase with strontium content and attain maximal values at x=0.5. Further increase in doping results in development of oxygen vacancy ordering phenomena and deterioration of conducting properties.

AB - The conductivity of the entire solid solution La1-xSrxFeO3-δ, where x=0.2, 0.4, 0.5, 0.7 and 0.9, in the oxygen partial pressure range 10-19-0.5atm and temperatures between 750°C and 950°C is reported. The partial contributions from different charge carriers and the energetic parameters governing transport of charged species reveal that the lanthanum-strontium ferrites can be characterized as mixed, ion-electron conductors in the low oxygen pressure/high oxygen deficiency limit. The partial contributions to conductivity from oxygen ions, electrons and holes increase with strontium content and attain maximal values at x=0.5. Further increase in doping results in development of oxygen vacancy ordering phenomena and deterioration of conducting properties.

KW - Electron conductivity

KW - Lanthanum-strontium ferrite

KW - Oxygen conductivity

KW - Oxygen ordering

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