Dominant type of atomic disorder in. cap alpha. -Al/sub 2/O/sub 3/
Journal Article
·
· J. Am. Ceram. Soc.; (United States)
Comparison of the energy of formation per defect, as deduced from experimental results on ..cap alpha..-Al/sub 2/O/sub 3/ doped with donors and acceptors on the basis of various models, with theoretical values calculated by Dienes et al for various disorder models shows closest correspondence of the experimental values with the smallest theoretical values (obtained for Schottky disorder). This indicates that the theoretical results are reliable and that Schottky disorder is the major type of atomic disorder in ..cap alpha..-Al/sub 2/O/sub 3/. Creep data on Al/sub 2/O/sub 3/:Fe by Hollenberg and Gordon make it possible to determine the enthalpy of Frenkel disorder of Al.
- Research Organization:
- Univ. of Southern California, Los Angeles
- OSTI ID:
- 6345110
- Journal Information:
- J. Am. Ceram. Soc.; (United States), Journal Name: J. Am. Ceram. Soc.; (United States) Vol. 61:3-4; ISSN JACTA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
360103 -- Metals & Alloys-- Mechanical Properties
ACTIVATION ENERGY
ALLOYS
ALUMINIUM
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CHALCOGENIDES
CREEP
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
DOPED MATERIALS
ELEMENTS
ENERGY
ENTHALPY
FRENKEL DEFECTS
IRON ADDITIONS
IRON ALLOYS
MECHANICAL PROPERTIES
METALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POINT DEFECTS
SCHOTTKY DEFECTS
THERMODYNAMIC PROPERTIES
VACANCIES
360102* -- Metals & Alloys-- Structure & Phase Studies
360103 -- Metals & Alloys-- Mechanical Properties
ACTIVATION ENERGY
ALLOYS
ALUMINIUM
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CHALCOGENIDES
CREEP
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
DOPED MATERIALS
ELEMENTS
ENERGY
ENTHALPY
FRENKEL DEFECTS
IRON ADDITIONS
IRON ALLOYS
MECHANICAL PROPERTIES
METALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POINT DEFECTS
SCHOTTKY DEFECTS
THERMODYNAMIC PROPERTIES
VACANCIES