SELF-ACTIVATED LUMINESCENCE OF M$sup 2+$ NIOBATES AND TANTALATES

Journal Article · Fri May 01 00:00:00 EDT 1964 · Journal of the Electrochemical Society (U.S.) Absorbed Electrochem. Technol.

DOI:https://doi.org/10.1149/1.2426176· OSTI ID:4019113

Wachtel, A

Among 22 compounds examined for photoluminescence, only Mg/sub 4/Nb/sub 2/O/sub 9/, CaTa/sub 2/O/sub 6/, and the metaniobates of Mg , Ca, Zn, and Cd show appreciable room temperature emission. With the exception of Mg/sub 4/Nb/sub 2/O/ sub 9/, all of these have the columbite structure; moreover, the only essentially nonluminescent columbite-type compound noted was ZnTa/sub 2/O/sub 6/. The absorption edges of the luminescent niobates lie at shorter wavelengths than those of otherwise similar compositions. This indicates a relationship between luminescence and the separation of energy states within the Nb--O bond, as influenced by structure. (auth)

• Research Organization: Westinghouse Electric Corp., Bloomfield, N.J.
• Sponsoring Organization: USDOE
• NSA Number: NSA-18-020060
• OSTI ID: 4019113
• Journal Information: Journal of the Electrochemical Society (U.S.) Absorbed Electrochem. Technol., Vol. Vol: 111; Other Information: Orig. Receipt Date: 31-DEC-64
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

CHEMISTRY
ABSORPTION
BINDING ENERGY
CADMIUM OXIDES
CALCIUM OXIDES
ENERGY LEVELS
FREQUENCY
IRON OXIDES
LATTICES
LUMINESCENCE
MAGNESIUM OXIDES
MANGANESE OXIDES
MINERALS
NIOBITE
NIOBIUM OXIDES
TANTALUM OXIDES
ZINC OXIDES