Summary_BasicCrystallography1_lattices

Summary_BasicCrystallography1_lattices - Summary - BASIC...

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Perfect crystals are described by the underlying crystal structure . • We describe crystal structure using the underlying Bravais Lattice combined with the Motif of atoms or ions or molecules that decorate each lattice point. … CRYSTAL STRUCTURE = LATTICE + MOTIF CS = L + M Summary - BASIC CRYSTALLOGRAPHY
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Defni&ons
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Defni&ons
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Later…
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Defni&ons
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7 Crystal Systems in 3-D triclinic (a), monoclinic (m), hexagonal (h), rhombohedral ( R), orthorhombic (o), tetragonal (t), cubic ( c) … and 14 BRAVAIS LATTICES aP; mP; mC; oP; oC; oI; oF; tP; tI; R; hP; cP; cI; cF; … with lattice points at 000 for the seven P-la6ces… ( aP, mP, oP, tP, RP, hP, cP ) … and at 000 and 1/2 1/2 0 for the two C-la6ces… ( mC, oC ) … and at 000 and 1/2 1/2 1/2 for the three I- la6ces…( oI, tI, cI ) … and at 000, 1/2 1/2 0, 1/2 0 1/2, and 0 1/2 1/2 for the two F-la6ces… (oF, cF)
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14 Bravais La6ces and 7 Crystal Systems
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Can you name, list the 14 Bravais La6ces and the 7 Crystal Systems? What are the posi&ons of the la6ce points for the 14 Bravais La6ces?
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This note was uploaded on 01/07/2011 for the course MEMS Mems1054 taught by Professor Wiezorek during the Fall '10 term at Pittsburgh.

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Summary_BasicCrystallography1_lattices - Summary - BASIC...

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