Structure and luminescence of some CsLnW2O8 compounds
β Scribed by C.C. Torardi; C. Page; L.H. Brixner; G. Blasse; G.J. Dirksen
- Publisher
- Elsevier Science
- Year
- 1987
- Tongue
- English
- Weight
- 564 KB
- Volume
- 69
- Category
- Article
- ISSN
- 0022-4596
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π SIMILAR VOLUMES
BaCa 2 MgSi 2 O 8 Crystal structure Neutron diffraction data Eu 2 ΓΎ luminescence Site assignment a b s t r a c t Barium calcium magnesium silicate (BaCa 2 MgSi 2 O 8 ), a compound whose space group was obtained via X-ray diffraction data, was re-investigated using neutron diffraction techniques. A
## Abstract A combined powder Xβray and neutron Rietveld method reveals that BaCa~2~MgSi~2~O~8~ crystallizes in the trigonal space group P$\bar 3$ with Z = 1 and not in the previously reported space group P$\bar 3$m1.
The crystal structure of strontium dialuminodiborate SrAl 2 B 2 O 7 has been established by single-crystal X-ray di4raction methods. The compound crystallizes in the trigonal system (space group R3 c, Z β«Ψβ¬ 6) with cell parameters a β«Ψβ¬ 4.893(1) A > and c β«Ψβ¬ 47.78(1) A > . Aluminium and boron atoms
Crystal structure of BaMg 2 Si 2 O 7 was determined and refined by a combined powder X-ray and neutron Rietveld method (monoclinic, C2/c, no. 15, The structure contains a single crystallographic type of Ba atom coordinated to eight O atoms with C 1 (1) site symmetry. Under 325-nm excitation Ba 0.98