The Solid Solution Lu2–xScxSiO5
Keyword(s):
X Ray
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The monoclinic silicates Lu2SiO5 and Sc2SiO5 (Y2SiO5 type, space groupC2/c) forma solid solution Lu2−xScxSiO5. Samples with x = 0.5, 0.8, 1.0 were synthesized ceramically from Lu2O3, Sc2O3, and SiO2. The structures of three crystals with x = 0.88, 0.77, and 0.50 were refined on the basis of single-crystal X-ray diffraction data. The rare earth (RE) atoms occupy two crystallographically different 8ƒ sites with oxygen coordination numbers (CN) of 6 (RE2) and 7 (RE1). Refinements of the occupancy parameters showed Lu/Sc mixing for both sites with a strong preference of the smaller scandium atoms for CN6
2016 ◽
Vol 71
(5)
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pp. 411-417
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1989 ◽
Vol 161
(5-6)
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pp. 598-606
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2017 ◽
Vol 73
(1)
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pp. 1-9
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