Oxygen-ion and electron conductivity in Sr2(Fe1-xGax)2 O5

I. A. Leonidov; M. V. Patrakeev; J. A. Bahteeva; K. V. Poholok; D. S. Filimonov; K. R. Poeppelmeier; V. L. Kozhevnikov

doi:10.1016/j.jssc.2006.05.028

Oxygen-ion and electron conductivity in Sr₂(Fe_1-xGa_x)₂ O₅

I. A. Leonidov, M. V. Patrakeev, J. A. Bahteeva, K. V. Poholok, D. S. Filimonov, K. R. Poeppelmeier, V. L. Kozhevnikov^*

^*Corresponding author for this work

Chemistry

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

16 Scopus citations

Abstract

High-temperature electrical conductivity measurements, structural data from powder X-ray diffraction and ⁵⁷Fe Mössbauer spectroscopy were combined to study the interrelationship of oxygen ion transport and p- and n-type transport in Sr₂(Fe_1-xGa_x)₂O ₅, where x = 0, 0.1 and 0.2. Although gallium substitution generally decreases the total ion-electron transport, the transition of the orthorhombic brownmillerite structure to a cubic phase on heating results in the recurrence of the conductivity to the same high level as in the parent ferrite (x = 0). The changes of the partial contributions to the total conductivity as a function of x are shown to reflect a complicated interplay of the disordering processes that develop in the oxygen sublattice on heating in response to replacement of iron with gallium.

Original language	English (US)
Pages (from-to)	3045-3051
Number of pages	7
Journal	Journal of Solid State Chemistry
Volume	179
Issue number	10
DOIs	https://doi.org/10.1016/j.jssc.2006.05.028
State	Published - Oct 2006

Keywords

Electrical conductivity
Mössbauer spectroscopy
Strontium ferrite

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/j.jssc.2006.05.028

Cite this

@article{cdbb27e0524942088dbed500c0681d80,

title = "Oxygen-ion and electron conductivity in Sr2(Fe1-xGax)2 O5",

abstract = "High-temperature electrical conductivity measurements, structural data from powder X-ray diffraction and 57Fe M{\"o}ssbauer spectroscopy were combined to study the interrelationship of oxygen ion transport and p- and n-type transport in Sr2(Fe1-xGax)2O 5, where x = 0, 0.1 and 0.2. Although gallium substitution generally decreases the total ion-electron transport, the transition of the orthorhombic brownmillerite structure to a cubic phase on heating results in the recurrence of the conductivity to the same high level as in the parent ferrite (x = 0). The changes of the partial contributions to the total conductivity as a function of x are shown to reflect a complicated interplay of the disordering processes that develop in the oxygen sublattice on heating in response to replacement of iron with gallium.",

keywords = "Electrical conductivity, M{\"o}ssbauer spectroscopy, Strontium ferrite",

author = "Leonidov, {I. A.} and Patrakeev, {M. V.} and Bahteeva, {J. A.} and Poholok, {K. V.} and Filimonov, {D. S.} and Poeppelmeier, {K. R.} and Kozhevnikov, {V. L.}",

note = "Funding Information: Authors are grateful to the Ural Branch of the Russian Academy of Science for support of this work under cooperation agreement #7-1. The present work has been also supported in part by the Grant #978002 from the NATO SfP program, and by the Chemical Sciences, Geosciences and Biosciences Division, Office of Basic Energy Sciences, Office of Science, US Department of Energy under Award #DE-FG02-03-ER15457.",

year = "2006",

month = oct,

doi = "10.1016/j.jssc.2006.05.028",

language = "English (US)",

volume = "179",

pages = "3045--3051",

journal = "Journal of Solid State Chemistry",

issn = "0022-4596",

publisher = "Academic Press Inc.",

number = "10",

}

TY - JOUR

T1 - Oxygen-ion and electron conductivity in Sr2(Fe1-xGax)2 O5

AU - Leonidov, I. A.

AU - Patrakeev, M. V.

AU - Bahteeva, J. A.

AU - Poholok, K. V.

AU - Filimonov, D. S.

AU - Poeppelmeier, K. R.

AU - Kozhevnikov, V. L.

N1 - Funding Information: Authors are grateful to the Ural Branch of the Russian Academy of Science for support of this work under cooperation agreement #7-1. The present work has been also supported in part by the Grant #978002 from the NATO SfP program, and by the Chemical Sciences, Geosciences and Biosciences Division, Office of Basic Energy Sciences, Office of Science, US Department of Energy under Award #DE-FG02-03-ER15457.

PY - 2006/10

Y1 - 2006/10

N2 - High-temperature electrical conductivity measurements, structural data from powder X-ray diffraction and 57Fe Mössbauer spectroscopy were combined to study the interrelationship of oxygen ion transport and p- and n-type transport in Sr2(Fe1-xGax)2O 5, where x = 0, 0.1 and 0.2. Although gallium substitution generally decreases the total ion-electron transport, the transition of the orthorhombic brownmillerite structure to a cubic phase on heating results in the recurrence of the conductivity to the same high level as in the parent ferrite (x = 0). The changes of the partial contributions to the total conductivity as a function of x are shown to reflect a complicated interplay of the disordering processes that develop in the oxygen sublattice on heating in response to replacement of iron with gallium.

AB - High-temperature electrical conductivity measurements, structural data from powder X-ray diffraction and 57Fe Mössbauer spectroscopy were combined to study the interrelationship of oxygen ion transport and p- and n-type transport in Sr2(Fe1-xGax)2O 5, where x = 0, 0.1 and 0.2. Although gallium substitution generally decreases the total ion-electron transport, the transition of the orthorhombic brownmillerite structure to a cubic phase on heating results in the recurrence of the conductivity to the same high level as in the parent ferrite (x = 0). The changes of the partial contributions to the total conductivity as a function of x are shown to reflect a complicated interplay of the disordering processes that develop in the oxygen sublattice on heating in response to replacement of iron with gallium.

KW - Electrical conductivity

KW - Mössbauer spectroscopy

KW - Strontium ferrite

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