Template:Atomic packing factor (bct)/doc

Calculates the atomic packing factor for body centered tetragonal.

a=b≠c

α=β=γ=90

First this template determines the atomic radius by choosing the lesser of:
 * 1) /2
 * 2) /2
 * 3) 0.25*(^2 + ^2 + ^2)^0.5

Then the atomic packing factor is easily calculated.
 * number of Lattice points per unit cell * volume of atom / volume of unit cell

=

Examples
fcc = =

fcc = =

bcc = =

? = =