Diffraction analysis of metamict samarskite

Diffraction analysis of metamict samarskite

Samarskite from Mitchell County, N.C. Total scattered intensity per atom Ia(K) was determined and Fourier transformed, to obtain the radial distribution function RDF, which revealed the closest metal-oxygen distances (rA-O = 2.4Å and rB-O = 2.0Å). The sum of oxygen ions about an A and a B-type ion l...

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Veröffentlicht in:The American mineralogist 1983-04, Vol.68 (3-4), p.459-465
Hauptverfasser: Keller, Ludwig, Wagner, C. N. J
Format: Artikel
Sprache:eng
Schlagworte:
amorphous materials
crystal structure
experimental studies
Fourier analysis
metamict minerals
mineral data
mineralogy
minerals
Mitchell County North Carolina
niobates
niobotantalates
nonsilicates
North Carolina
oxides
radial distribution function
samarskite
tantalates
theoretical studies
United States
X-ray data
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Zusammenfassung:Samarskite from Mitchell County, N.C. Total scattered intensity per atom Ia(K) was determined and Fourier transformed, to obtain the radial distribution function RDF, which revealed the closest metal-oxygen distances (rA-O = 2.4Å and rB-O = 2.0Å). The sum of oxygen ions about an A and a B-type ion lies between 11 and 12 atoms. The RDF of metamict samarskite appears to be typical for the short range order found in truly amorphous solids.—Modified journal abstract.
ISSN:0003-004X
1945-3027