High‐Temperature Defect Structure of Iron‐Doped α‐Alumina | Zendy

DUTT B. V. | Zendy; KRÖGER F. A. | Zendy

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High‐Temperature Defect Structure of Iron‐Doped α‐Alumina

Author(s) -

DUTT B. V.,

KRÖGER F. A.

Publication year - 1975

Publication title -

journal of the american ceramic society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.9

H-Index - 196

eISSN - 1551-2916

pISSN - 0002-7820

DOI - 10.1111/j.1151-2916.1975.tb18761.x

Subject(s) - doping , divalent , conductivity , ionic conductivity , ionic bonding , materials science , electrical resistivity and conductivity , ion , chemistry , inorganic chemistry , analytical chemistry (journal) , metallurgy , optoelectronics , physics , organic chemistry , electrode , quantum mechanics , chromatography , electrolyte

Conductivity measurements of iron‐doped a‐Al 2 O 3 by Pappis and Kingery are interpreted on the basis of a model in which ionic defects are the major defect species. The analysis leads to equilibrium constants for the establishment of non‐stoichiornetry in Al 2 O 3 and for the oxidation‐reduction of divalent to trivalent iron, and to the position of the electronic level of Fe 2+ (=Fe A1′ ) in the gap at E r + 3.66 eV.

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