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- W1971094927 abstract "The crystal structures of (Ti1−xScx)2O3, x = 0.0038, 0.0109, and 0.0413, and of (Ti0.99Al0.01)2O3, have been determined from X-ray diffraction data collected from single crystals using an automated diffractometer, and have been refined to weighted residuals of 25–34. Cell constants have also been determined for x = 0.0005, 0.0019, and 0.0232. The compounds are rhombohedral, space group R3c, and are isomorphous with α-Al2O3. The hexagonal cell dimensions range from a = 5.1573(2)Å, c = 13.613(1)Å for (Ti0.9995Sc0.0005)2O3 to a = 5.1659(4)Å, c = 13.644(1)Å for (Ti0.9587Sc0.0413)2O3, and a = 5.1526(2)Å, c = 13.609(1)Å for (Ti0.99Al0.01)2O3. Sc and Al substitution cause similar increases in the short near-neighbor metal-metal distance across the shared octahedral face; for Sc doping the increase is from 2.578(1) Å in pure Ti2O3 to 2.597(1) Å in (Ti0.9587Sc0.0413)2O3. By contrast, changes in the metal-metal distance across the shared octahedral edge appear to be governed by ionic size effects. The distance increases from 2.994(1) Å in Ti2O3 to 3.000(1) Å in (Ti0.9587Sc0.0413)2O3 and decreases to 2.991(1) Å in (Ti0.99Al0.01)2O3." @default.
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- W1971094927 date "1977-06-01" @default.
- W1971094927 modified "2023-09-27" @default.
- W1971094927 title "Structural changes resulting from doping Ti2O3 with Sc2O3 or Al2O3" @default.
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- W1971094927 doi "https://doi.org/10.1016/0022-4596(77)90155-4" @default.
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