Defect agglomeration in wüstite at high temperatures-II. An electrical conduction model

E. Gartstein; J. B. Cohen; T. O. Mason

doi:10.1016/0022-3697(86)90005-3

Defect agglomeration in wüstite at high temperatures-II. An electrical conduction model

E. Gartstein^*, J. B. Cohen, T. O. Mason

^*Corresponding author for this work

Materials Science and Engineering

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

31 Scopus citations

Abstract

A defect/electrical conduction model based upon a mixture of 5:2 and 13:4 (vacancy-to-tetrahedral) clusters is proposed for FeO which is consistent with available diffraction, nonstoichiometry and electrical data. Conduction occurs via small polaron hopping between Fe³⁺ and Fe²⁺ on octahedral near-cluster sites with two vacancy nearest neighbors. Evidence is cited for an increase in Fe²⁺ on tetrahedral (interstitial) sites as temperature increases.

Original language	English (US)
Pages (from-to)	775-781
Number of pages	7
Journal	Journal of Physics and Chemistry of Solids
Volume	47
Issue number	8
DOIs	https://doi.org/10.1016/0022-3697(86)90005-3
State	Published - 1986

Funding

Acknowledgemenu-Thisr esearchw as supportedi nitially by the U.S. Army Research Office (Contract No. DAAG29-80X0035)a ndt henb y theD epartmenot f Energy (Grant No. DE-AC02-83ER45043T).h is paperi s basedi n part on the thesis of E. Gartstein submitted in partial fulfillment of the requirements for the Ph.D. degree at Northwestern University.

Keywords

Defects
Seebeck coefficient
clusters
defect clusters
electrical conductivity

ASJC Scopus subject areas

General Chemistry
General Materials Science
Condensed Matter Physics

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10.1016/0022-3697(86)90005-3

Cite this

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title = "Defect agglomeration in w{\"u}stite at high temperatures-II. An electrical conduction model",

abstract = "A defect/electrical conduction model based upon a mixture of 5:2 and 13:4 (vacancy-to-tetrahedral) clusters is proposed for FeO which is consistent with available diffraction, nonstoichiometry and electrical data. Conduction occurs via small polaron hopping between Fe3+ and Fe2+ on octahedral near-cluster sites with two vacancy nearest neighbors. Evidence is cited for an increase in Fe2+ on tetrahedral (interstitial) sites as temperature increases.",

keywords = "Defects, Seebeck coefficient, clusters, defect clusters, electrical conductivity",

author = "E. Gartstein and Cohen, {J. B.} and Mason, {T. O.}",

note = "Funding Information: Acknowledgemenu-Thisr esearchw as supportedi nitially by the U.S. Army Research Office (Contract No. DAAG29-80X0035)a ndt henb y theD epartmenot f Energy (Grant No. DE-AC02-83ER45043T).h is paperi s basedi n part on the thesis of E. Gartstein submitted in partial fulfillment of the requirements for the Ph.D. degree at Northwestern University.",

year = "1986",

doi = "10.1016/0022-3697(86)90005-3",

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pages = "775--781",

journal = "Journal of Physics and Chemistry of Solids",

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T1 - Defect agglomeration in wüstite at high temperatures-II. An electrical conduction model

AU - Gartstein, E.

AU - Cohen, J. B.

AU - Mason, T. O.

N1 - Funding Information: Acknowledgemenu-Thisr esearchw as supportedi nitially by the U.S. Army Research Office (Contract No. DAAG29-80X0035)a ndt henb y theD epartmenot f Energy (Grant No. DE-AC02-83ER45043T).h is paperi s basedi n part on the thesis of E. Gartstein submitted in partial fulfillment of the requirements for the Ph.D. degree at Northwestern University.

PY - 1986

Y1 - 1986

N2 - A defect/electrical conduction model based upon a mixture of 5:2 and 13:4 (vacancy-to-tetrahedral) clusters is proposed for FeO which is consistent with available diffraction, nonstoichiometry and electrical data. Conduction occurs via small polaron hopping between Fe3+ and Fe2+ on octahedral near-cluster sites with two vacancy nearest neighbors. Evidence is cited for an increase in Fe2+ on tetrahedral (interstitial) sites as temperature increases.

AB - A defect/electrical conduction model based upon a mixture of 5:2 and 13:4 (vacancy-to-tetrahedral) clusters is proposed for FeO which is consistent with available diffraction, nonstoichiometry and electrical data. Conduction occurs via small polaron hopping between Fe3+ and Fe2+ on octahedral near-cluster sites with two vacancy nearest neighbors. Evidence is cited for an increase in Fe2+ on tetrahedral (interstitial) sites as temperature increases.

KW - Defects

KW - Seebeck coefficient

KW - clusters

KW - defect clusters

KW - electrical conductivity

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JF - Journal of Physics and Chemistry of Solids

IS - 8

ER -

Defect agglomeration in wüstite at high temperatures-II. An electrical conduction model

Abstract

Funding

Keywords

ASJC Scopus subject areas

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