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Unformatted text preview: z y x O O' x' z' y' 1 Hexagonal Crystals MillerBravais indices are used to represent a plane in hexagonal crystal (hkil) h= 1/ intersection with a1 k= 1/ intersection with a2 l= 1/ intersection with z i =  (h + k) which represent intersection with a3 Hexagonal Crystals Ex: Intersection 1 1 1 a1 a2 z Reciprocal 11 1 h k l i = (h + k) = (11) = 0 MillerBravais indices (1 1 0 1) • Family of planes: are planes that are crystollographically equivalent ( having the same atomic packing) and • Family of planes is represented by {hkl} • Example: for cubic systems Equivalent Planes • For cubic systems; planes having the same indices irrespective of the order or signs are equivalent ( this does not apply for other crystal systems ) . • A direction having the same indices of a plane is normal to it • Example: [101] is normal to (101) Equivalent Planes...
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 Fall '10
 bassildrass
 Materials Science, Crystallography, Crystal, 0 k, Crystal system, Intercepts Reciprocal

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