Defect chemistry of oxides in partially frozen-in states: Case studies for ZrO2(Y2O3), SrZrO3(Y2O3), and SrTiO3

K. Sasaki; J. Claus; J. Maier

doi:10.1016/S0167-2738(98)00528-1

Defect chemistry of oxides in partially frozen-in states: Case studies for ZrO₂(Y₂O₃), SrZrO₃(Y₂O₃), and SrTiO₃

K. Sasaki, J. Claus, J. Maier

Research output: Contribution to journal › Conference article › peer-review

30 Citations (Scopus)

Abstract

The low temperature defect chemistry is analyzed for ZrO₂(Y₂O₃), SrZrO₃(Y₂O₃), and SrTiO₃. In this temperature regime, the oxygen incorporation is no longer in equilibrium but the internal ionization reaction of electrons (holes) with redox-active impurities is still reversible. The concentration of ions with a specific valence state is quantified by EPR for ZrO₂(Y₂O₃), while the electrical conductivity is considered for SrZrO₃(Y₂O₃) and SrTiO₃. It is shown that the experimental low-temperature results can well be explained in this way. If the experiments are appropriately conducted, an additional degree of freedom is introduced, which is the freezing-in temperature. The technological and scientific relevance with respect to materials research is discussed.

Original language	English
Pages (from-to)	51-60
Number of pages	10
Journal	Solid State Ionics
Volume	121
Issue number	1
DOIs	https://doi.org/10.1016/S0167-2738(98)00528-1
Publication status	Published - Jun 1999
Externally published	Yes
Event	Proceedings of the 1997 11th International Conference on Solid State Ionics, SSI-97 - Honolulu, HI, USA Duration: Nov 16 1997 → Nov 21 1997

All Science Journal Classification (ASJC) codes

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

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10.1016/S0167-2738(98)00528-1

Cite this

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title = "Defect chemistry of oxides in partially frozen-in states: Case studies for ZrO2(Y2O3), SrZrO3(Y2O3), and SrTiO3",

abstract = "The low temperature defect chemistry is analyzed for ZrO2(Y2O3), SrZrO3(Y2O3), and SrTiO3. In this temperature regime, the oxygen incorporation is no longer in equilibrium but the internal ionization reaction of electrons (holes) with redox-active impurities is still reversible. The concentration of ions with a specific valence state is quantified by EPR for ZrO2(Y2O3), while the electrical conductivity is considered for SrZrO3(Y2O3) and SrTiO3. It is shown that the experimental low-temperature results can well be explained in this way. If the experiments are appropriately conducted, an additional degree of freedom is introduced, which is the freezing-in temperature. The technological and scientific relevance with respect to materials research is discussed.",

author = "K. Sasaki and J. Claus and J. Maier",

year = "1999",

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doi = "10.1016/S0167-2738(98)00528-1",

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number = "1",

note = "Proceedings of the 1997 11th International Conference on Solid State Ionics, SSI-97 ; Conference date: 16-11-1997 Through 21-11-1997",

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T1 - Defect chemistry of oxides in partially frozen-in states

T2 - Proceedings of the 1997 11th International Conference on Solid State Ionics, SSI-97

AU - Sasaki, K.

AU - Claus, J.

AU - Maier, J.

PY - 1999/6

Y1 - 1999/6

N2 - The low temperature defect chemistry is analyzed for ZrO2(Y2O3), SrZrO3(Y2O3), and SrTiO3. In this temperature regime, the oxygen incorporation is no longer in equilibrium but the internal ionization reaction of electrons (holes) with redox-active impurities is still reversible. The concentration of ions with a specific valence state is quantified by EPR for ZrO2(Y2O3), while the electrical conductivity is considered for SrZrO3(Y2O3) and SrTiO3. It is shown that the experimental low-temperature results can well be explained in this way. If the experiments are appropriately conducted, an additional degree of freedom is introduced, which is the freezing-in temperature. The technological and scientific relevance with respect to materials research is discussed.

AB - The low temperature defect chemistry is analyzed for ZrO2(Y2O3), SrZrO3(Y2O3), and SrTiO3. In this temperature regime, the oxygen incorporation is no longer in equilibrium but the internal ionization reaction of electrons (holes) with redox-active impurities is still reversible. The concentration of ions with a specific valence state is quantified by EPR for ZrO2(Y2O3), while the electrical conductivity is considered for SrZrO3(Y2O3) and SrTiO3. It is shown that the experimental low-temperature results can well be explained in this way. If the experiments are appropriately conducted, an additional degree of freedom is introduced, which is the freezing-in temperature. The technological and scientific relevance with respect to materials research is discussed.

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Defect chemistry of oxides in partially frozen-in states: Case studies for ZrO₂(Y₂O₃), SrZrO₃(Y₂O₃), and SrTiO₃

Abstract

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