Yttrium, an isoelectric donor in /alpha/-Al/sub 2/O/sub 3/

Journal Article · Tue Jun 01 04:00:00 EDT 1982 · J. Am. Ceram. Soc.; (United States)

DOI:https://doi.org/10.1111/j.1151-2916.1982.tb10444.x· OSTI ID:6337941

El-Aiat, M M; Kroeger, F A

Measurements of dc electrical conductivity and emf of single-crystal and polycrystalline /alpha/-Al/sub 2/O/sub 3/ doped, respectively, with 100 and 300 ppm yttrium show that yttrium, although isoelectronic with aluminum, is a donor. The donor activity of Y supports the view that the favorable effect of Y on the oxidation of super alloys is due to reduced diffusion of Al. 33 refs.

• Research Organization: Univ of South Calif, Los Angeles, USA
• OSTI ID: 6337941
• Journal Information: J. Am. Ceram. Soc.; (United States), Journal Name: J. Am. Ceram. Soc.; (United States) Vol. 65:6; ISSN JACTA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360201 -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CHALCOGENIDES
CRYSTAL DOPING
DOPED MATERIALS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
MATERIALS
METALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
TRANSITION ELEMENTS
VERY HIGH TEMPERATURE
YTTRIUM