High-temperature phase equilibria in the oxide systems SrFe 1-xGaxO2.5-SrFe1- xGaxO3 (x = 0, 0.1, 0.2)

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

doi:10.1016/j.jssc.2005.12.036

High-temperature phase equilibria in the oxide systems SrFe _1-xGa_xO_2.5-SrFe_1- _xGa_xO₃ (x = 0, 0.1, 0.2)

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

^*Corresponding author for this work

Chemistry

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

12 Scopus citations

Abstract

X-ray powder diffraction, Raman scattering, equilibrium oxygen content and conductivity data are combined to construct high-temperature phase diagrams (T vs. δ) for the oxide systems SrFe_1-xGa _xO_2.5-SrFe_1-xGa_xO ₃, where x=0, 0.1, and 0.2. Depending on oxygen content and gallium doping, three different structural types are shown to exist at high temperatures including cubic perovskite-, cubic brownmillerite-, and orthorhombic brownmillerite-type structures. Substitution of gallium for iron is shown to extend the oxygen content and temperature limits where the cubic brownmillerite-type phase is stable.

Original language	English (US)
Pages (from-to)	1093-1099
Number of pages	7
Journal	Journal of Solid State Chemistry
Volume	179
Issue number	4
DOIs	https://doi.org/10.1016/j.jssc.2005.12.036
State	Published - Apr 1 2006

Keywords

Conductivity
Oxygen content
Phase diagrams
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.2005.12.036

Cite this

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title = "High-temperature phase equilibria in the oxide systems SrFe 1-xGaxO2.5-SrFe1- xGaxO3 (x = 0, 0.1, 0.2)",

abstract = "X-ray powder diffraction, Raman scattering, equilibrium oxygen content and conductivity data are combined to construct high-temperature phase diagrams (T vs. δ) for the oxide systems SrFe1-xGa xO2.5-SrFe1-xGaxO 3, where x=0, 0.1, and 0.2. Depending on oxygen content and gallium doping, three different structural types are shown to exist at high temperatures including cubic perovskite-, cubic brownmillerite-, and orthorhombic brownmillerite-type structures. Substitution of gallium for iron is shown to extend the oxygen content and temperature limits where the cubic brownmillerite-type phase is stable.",

keywords = "Conductivity, Oxygen content, Phase diagrams, Strontium ferrite",

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

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T1 - High-temperature phase equilibria in the oxide systems SrFe 1-xGaxO2.5-SrFe1- xGaxO3 (x = 0, 0.1, 0.2)

AU - Leonidov, I. A.

AU - Patrakeev, M. V.

AU - Bahteeva, J. A.

AU - Mitberg, E. B.

AU - Kozhevnikov, V. L.

AU - Colomban, P.

AU - Poeppelmeier, K. R.

PY - 2006/4/1

Y1 - 2006/4/1

N2 - X-ray powder diffraction, Raman scattering, equilibrium oxygen content and conductivity data are combined to construct high-temperature phase diagrams (T vs. δ) for the oxide systems SrFe1-xGa xO2.5-SrFe1-xGaxO 3, where x=0, 0.1, and 0.2. Depending on oxygen content and gallium doping, three different structural types are shown to exist at high temperatures including cubic perovskite-, cubic brownmillerite-, and orthorhombic brownmillerite-type structures. Substitution of gallium for iron is shown to extend the oxygen content and temperature limits where the cubic brownmillerite-type phase is stable.

AB - X-ray powder diffraction, Raman scattering, equilibrium oxygen content and conductivity data are combined to construct high-temperature phase diagrams (T vs. δ) for the oxide systems SrFe1-xGa xO2.5-SrFe1-xGaxO 3, where x=0, 0.1, and 0.2. Depending on oxygen content and gallium doping, three different structural types are shown to exist at high temperatures including cubic perovskite-, cubic brownmillerite-, and orthorhombic brownmillerite-type structures. Substitution of gallium for iron is shown to extend the oxygen content and temperature limits where the cubic brownmillerite-type phase is stable.

KW - Conductivity

KW - Oxygen content

KW - Phase diagrams

KW - Strontium ferrite

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