text: The FCC lattice is a Bravais lattice, and its Fourier transform is a body-centered cubic lattice.  However to obtain  without this shortcut, consider an FCC crystal with one atom at each lattice point as a primitive or simple cubic with a basis of 4 atoms, at the origin  and at the three adjacent face centers, ,  and .    Equation () becomes
  with the result
  The most intense diffraction peak from a material that crystallizes in the FCC structure is typically the (111).   Films of FCC materials like gold tend to grow in a (111) orientation with a triangular surface symmetry.  A zero diffracted intensity for a group of diffracted beams (here,  of mixed parity) is called a systematic absence.