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look up the a_j for the bcc and fcc lattices. (1) show that the reciprocal lattice...

look up the a_j for the bcc and fcc lattices.

(1) show that the reciprocal lattice of the bcc lattice is fcc and vice versa.

(2) for both bcc and fcc work out the magnitude of A_j in terms of a, the edge of the conventional cubic unit cell.

bcc: a1=(a/2)(-e1+e2+e3), a2=(a/2)(e1-e2+e3), a3=(a/2)(e1+e2-e3)

fcc: a1=(a/2)(e2+e3), a2=(a/2)(e1+e3), a3=(a/2)(e1+e2)

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