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Figure 1
Sketch of the cubic crystal structure of calcium sulfide, whose symmetry group is (No. 225) with a = 5.686 Å. The nearest-neighboring atomic distance between Ca and S atoms is 2.8 Å, suggesting a less compact lattice structure. |
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Figure 1
Sketch of the cubic crystal structure of calcium sulfide, whose symmetry group is (No. 225) with a = 5.686 Å. The nearest-neighboring atomic distance between Ca and S atoms is 2.8 Å, suggesting a less compact lattice structure. |