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Parameters determined by XRD pattern.
| Parameters | Black Sumatra | Fighting cock |
|---|---|---|
| Lattice constant parameters (a and c) | a = 9.2916; c = 6.0 | a = 9.263 ;c = 6.8 |
| Average grain size (Dn) | 62.67 nm | 31.34 nm |
| Volume of hexagonal unit (V) | 1019.63 | 1490.10 |
| Specific surface area (S) | 30.29 | 60.585 |
| Crystallinity (Xc) | 2.348544 | 0.762829 |
