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. 2020 Nov 11;28(1):840–846. doi: 10.1016/j.sjbs.2020.11.020

Table 1.

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