Eu-O bonding and spectroscopy of Eu(III) in. beta. double prime -alumina

Journal Article · Fri Dec 01 04:00:00 EST 1989 · Journal of Solid State Chemistry; (USA)

DOI:https://doi.org/10.1016/0022-4596(89)90177-1· OSTI ID:6716558

Saltzberg, M A; Farrington, G C ^[1]

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1. Univ. of Pennsylvania, Philadelphia (USA)

The trivalent {beta}{double prime}-aluminas are the only crystalline solids yet reported in which trivalent cations are significantly mobile at moderate temperatures ({approx}400{degree}C). The investigations described in this paper examined the factors that influence the Eu(III) ion distribution, bonding, and spectroscopy in a range of Na(I)-Eu(III) {beta}{double prime}-alumina compositions. The low-temperature ion-exchange synthesis used to prepare these materials leads to unusual Eu(III)-O bonding in the structure. The trivalent ions are relatively free to move in {beta}{double prime}-alumina at moderate temperatures because there appears to be no site in the conduction layers at which the trivalent ion-oxygen bonding is particularly strong. The site occupations and the optical properties of the Eu(III) ions in {beta}{double prime}-alumina have been shown to be sensitive to the thermal history of the samples.

• OSTI ID: 6716558
• Journal Information: Journal of Solid State Chemistry; (USA), Journal Name: Journal of Solid State Chemistry; (USA) Vol. 83:2; ISSN JSSCB; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
ALUMINATES
ALUMINIUM COMPOUNDS
CHALCOGENIDES
CHEMICAL BONDS
DATA
DATA ANALYSIS
EMISSION SPECTROSCOPY
EUROPIUM COMPOUNDS
EUROPIUM OXIDES
EXPERIMENTAL DATA
FLUORESCENCE SPECTROSCOPY
HIGH TEMPERATURE
INFORMATION
MEASURING INSTRUMENTS
MEASURING METHODS
NUMERICAL DATA
OPTICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
SPECTROSCOPY