2. Crystal Structure

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interplanar spacing between two closest parallelplanes with the same Miller indices isdesignated d hkl (h, k, l are the Miller indices)ad hkl = ——————√h 2 + k 2 + l 2a: = lattice constantex. determine the Miller indices of the planesshown as follow:(a)(b)(5120) (646)12
hexagonal structureMiller-Bravais indices – HCP crystal planeindices (hkil) h + k + i = 0three basal axes a 1 , a 2 , a 3 and c axisbasal planes (0001)prism planes(ABCD) (1010)(ABEF) (1100)(CDGH) (0110)13
Page 2: crystal systemonly 7 different type
Page 5 and 6: BCCFCCcoordination number = 8total
Page 7 and 8: the closest packingHCPa b a b a …
Page 9 and 10: directions are crystallographically
Page 11: ex. draw the following crystallogra
Page 15 and 16: volume, planar, linear densityvolum
Page 17 and 18: no. of atoms = ½ + 1 + ½ = 2 atom
Page 19 and 20: X-ray diffractionreflected wave pat
Page 21 and 22: diffraction pattern for cubic unit
Page 23: BCC {110) and {200}sin 2 θ A h 2 A

2. Crystal Structure

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