Real Materials Menu Prev Next · If the atoms are thought of as hard spheres, their packing fraction depends on the crystal structure and is defined as: Atomic Packing Fraction (APF) = (Total Volume of Atoms) / (Total Unit Cell Volume)
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· If the atoms are thought of as hard spheres, their packing fraction depends on the crystal structure and is defined as:
Atomic Packing Fraction (APF) = (Total Volume of Atoms) / (Total Unit Cell Volume)
· For the fcc lattice and a single atom basis:
APF = 0.74 = 74%