Question

what is the minimum distance between an octahedral and a tetrahedral void in fcc lattice

Answer 1

Dear Student,

The computation are expressed below,

Distance between octahedral and tetrahedral FCC is,


$x=\frac{R}{\cos {60}^o}=\frac{R}{\sqrt{{\displaystyle \raisebox{1ex}{$3$}\!\left/ \!\raisebox{-1ex}{$4$}\right.}}}=R\sqrt{\raisebox{1ex}{$4$}\!\left/ \!\raisebox{-1ex}{$3$}\right.}$

Regards.