Thermoelectric Determination of Cation Distributions in

A. TRESTMAN‐MATTS; S. E. DORRIS; S. KUMARAKRISHNAN; Thomas O Mason

doi:10.1111/j.1151-2916.1983.tb10996.x

Thermoelectric Determination of Cation Distributions in

A. TRESTMAN‐MATTS^*, S. E. DORRIS, S. KUMARAKRISHNAN, Thomas O Mason

^*Corresponding author for this work

Materials Science and Engineering

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

69 Scopus citations

Abstract

Thermoelectric coefficient measurements in the system Fe₃O₄‐Fe₂TiO₄ were used to determine the cation distributions from 600° to 1300°C. The cation distributions obeyed the relation ‐RT In K=‐9.61+2(‐0.0154T)b+0.0256T (kJ/mol) where K^Fe_cd is the iron distribution constant and b is the tetrahedral Fe³⁺ concentration. Low‐temperature extrapolations agreed with experimental magnetometry and lattice parameter results. With the incorporation of a subregular size‐mismatch term, agreement with high‐temperature thermodynamic data was achieved. A solvus at intermediate temperatures was correctly predicted by the model.

Original language	English (US)
Pages (from-to)	829-834
Number of pages	6
Journal	Journal of the American Ceramic Society
Volume	66
Issue number	12
DOIs	https://doi.org/10.1111/j.1151-2916.1983.tb10996.x
State	Published - Jan 1 1983

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

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10.1111/j.1151-2916.1983.tb10996.x

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abstract = "Thermoelectric coefficient measurements in the system Fe3O4‐Fe2TiO4 were used to determine the cation distributions from 600° to 1300°C. The cation distributions obeyed the relation ‐RT In K=‐9.61+2(‐0.0154T)b+0.0256T (kJ/mol) where KFecd is the iron distribution constant and b is the tetrahedral Fe3+ concentration. Low‐temperature extrapolations agreed with experimental magnetometry and lattice parameter results. With the incorporation of a subregular size‐mismatch term, agreement with high‐temperature thermodynamic data was achieved. A solvus at intermediate temperatures was correctly predicted by the model.",

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AU - TRESTMAN‐MATTS, A.

AU - DORRIS, S. E.

AU - KUMARAKRISHNAN, S.

AU - Mason, Thomas O

PY - 1983/1/1

Y1 - 1983/1/1

N2 - Thermoelectric coefficient measurements in the system Fe3O4‐Fe2TiO4 were used to determine the cation distributions from 600° to 1300°C. The cation distributions obeyed the relation ‐RT In K=‐9.61+2(‐0.0154T)b+0.0256T (kJ/mol) where KFecd is the iron distribution constant and b is the tetrahedral Fe3+ concentration. Low‐temperature extrapolations agreed with experimental magnetometry and lattice parameter results. With the incorporation of a subregular size‐mismatch term, agreement with high‐temperature thermodynamic data was achieved. A solvus at intermediate temperatures was correctly predicted by the model.

AB - Thermoelectric coefficient measurements in the system Fe3O4‐Fe2TiO4 were used to determine the cation distributions from 600° to 1300°C. The cation distributions obeyed the relation ‐RT In K=‐9.61+2(‐0.0154T)b+0.0256T (kJ/mol) where KFecd is the iron distribution constant and b is the tetrahedral Fe3+ concentration. Low‐temperature extrapolations agreed with experimental magnetometry and lattice parameter results. With the incorporation of a subregular size‐mismatch term, agreement with high‐temperature thermodynamic data was achieved. A solvus at intermediate temperatures was correctly predicted by the model.

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Thermoelectric Determination of Cation Distributions in

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