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The
diagrams show a simple cubic lattice with hard sphere atoms placed at each
lattice point. The distance between atom centers (a) depends upon the direction
in the lattice. In the [100] direction the atom spacing is, a, whereas
in the [110] direction the spacing is, b. Planes will also have a different
lattice spacing depending on their Miller index. The closest packed planes
for this structure are the {100} planes (cube faces) and they have the
widest lattice spacing. The {110} planes have a narrower spacing and a
lower area density of atoms. |
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