The oxygen permeation characteristics of Bi1 - xSrxFeO3 mixed ionic and electronic conducting ceramics

K. Brinkman; T. Iijima; H. Takamura

doi:10.1016/j.ssi.2009.11.016

The oxygen permeation characteristics of Bi_{1 - x}Sr_xFeO₃ mixed ionic and electronic conducting ceramics

K. Brinkman, T. Iijima, H. Takamura

ENG - Materials Science

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

50 Citations (Scopus)

Abstract

The perovskite oxides in the system Bi_{1 - x}Sr_xFeO_{3 - δ} (x = 0.05, 0.15, 0.3, 0.6, and 0.8) were characterized in the intermediate temperature range (650 to 800 °C) by oxygen permeation and electrical conductivity measurements. The samples exhibited a single phase perovskite structure with a decreasing lattice constant with increasing Sr concentration and a structural change from rhombohedral to cubic at x ≥ 0.3. Mixed conductivity was confirmed in all samples with maximum flux levels on the order of 0.11 μmol/cm² s at 800 °C for the x = 0.8 composition. Materials studied displayed p-type conductivity over the oxygen partial pressure range present in permeation measurements (0.21 to 10^{- 6} atm). A local maximum of oxygen flux and ionic conductivity was found near x = 0.3.

Original language	English
Pages (from-to)	53-58
Number of pages	6
Journal	Solid State Ionics
Volume	181
Issue number	1-2
DOIs	https://doi.org/10.1016/j.ssi.2009.11.016
Publication status	Published - 2010 Feb 8

Keywords

Conductivity
Mixed conducting oxide
Oxygen permeation

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10.1016/j.ssi.2009.11.016

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abstract = "The perovskite oxides in the system Bi1 - xSrxFeO3 - δ (x = 0.05, 0.15, 0.3, 0.6, and 0.8) were characterized in the intermediate temperature range (650 to 800 °C) by oxygen permeation and electrical conductivity measurements. The samples exhibited a single phase perovskite structure with a decreasing lattice constant with increasing Sr concentration and a structural change from rhombohedral to cubic at x ≥ 0.3. Mixed conductivity was confirmed in all samples with maximum flux levels on the order of 0.11 μmol/cm2 s at 800 °C for the x = 0.8 composition. Materials studied displayed p-type conductivity over the oxygen partial pressure range present in permeation measurements (0.21 to 10- 6 atm). A local maximum of oxygen flux and ionic conductivity was found near x = 0.3.",

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T1 - The oxygen permeation characteristics of Bi1 - xSrxFeO3 mixed ionic and electronic conducting ceramics

AU - Brinkman, K.

AU - Iijima, T.

AU - Takamura, H.

PY - 2010/2/8

Y1 - 2010/2/8

N2 - The perovskite oxides in the system Bi1 - xSrxFeO3 - δ (x = 0.05, 0.15, 0.3, 0.6, and 0.8) were characterized in the intermediate temperature range (650 to 800 °C) by oxygen permeation and electrical conductivity measurements. The samples exhibited a single phase perovskite structure with a decreasing lattice constant with increasing Sr concentration and a structural change from rhombohedral to cubic at x ≥ 0.3. Mixed conductivity was confirmed in all samples with maximum flux levels on the order of 0.11 μmol/cm2 s at 800 °C for the x = 0.8 composition. Materials studied displayed p-type conductivity over the oxygen partial pressure range present in permeation measurements (0.21 to 10- 6 atm). A local maximum of oxygen flux and ionic conductivity was found near x = 0.3.

AB - The perovskite oxides in the system Bi1 - xSrxFeO3 - δ (x = 0.05, 0.15, 0.3, 0.6, and 0.8) were characterized in the intermediate temperature range (650 to 800 °C) by oxygen permeation and electrical conductivity measurements. The samples exhibited a single phase perovskite structure with a decreasing lattice constant with increasing Sr concentration and a structural change from rhombohedral to cubic at x ≥ 0.3. Mixed conductivity was confirmed in all samples with maximum flux levels on the order of 0.11 μmol/cm2 s at 800 °C for the x = 0.8 composition. Materials studied displayed p-type conductivity over the oxygen partial pressure range present in permeation measurements (0.21 to 10- 6 atm). A local maximum of oxygen flux and ionic conductivity was found near x = 0.3.

KW - Conductivity

KW - Mixed conducting oxide

KW - Oxygen permeation

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The oxygen permeation characteristics of Bi_{1 - x}Sr_xFeO₃ mixed ionic and electronic conducting ceramics

Abstract

Keywords

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