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Figure 7
Analysis of 41 patterns of rhombohedral corundum (Al2O3) collected with a resolution of 400 × 288 pixels and 34 patterns of 800 × 576 pixels. (a) Displays the deviation of a/b and c/b from 1, whereas (b) presents the absolute lattice parameters derived for a and c (b as well as α, β and γ are not shown). The red dot shown in (b) and labelled TRUE-3% marks a 3% shorter basis vector length than that typical for corundum (a = 5.1288 Å).

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