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Kristallstruktur. Das Bravais-Gitter Die 14 Bravais-Gitter.

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Presentation on theme: "Kristallstruktur. Das Bravais-Gitter Die 14 Bravais-Gitter."— Presentation transcript:

1 Kristallstruktur

2 Das Bravais-Gitter

3 Die 14 Bravais-Gitter

4 Primitive und konventionelle Zelle

5 fcc bcc Kubisches Gitter

6 fcc-Struktur (face-centered cubic) a 1 = a/2(0,1,1) a 2 = a/2(1,0,1) a 1 = a/2(1,1,0) bcc-Struktur (body-centered cubic) a 1 = a/2(-1,1,1) a 2 = a/2(1,-1,1) a 1 = a/2(1,1,-1)

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8 Wigner-Seitz-Zelle

9 Zinkblende, Diamant BaTiO 3 CsCl NaCl Kristallstrukturen

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12 Hexagonal dichteste Kugelpackung

13 hcp-Struktur (hexagonal close-packed)

14 2D und 3D-Graphit

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16 Das reziproke Gitter

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20 Brillouin-Zonen sc fcc bcc Hexagonales Gitter

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22 Symbol Description ΓCenter of the Brillouin zone Face-centered cubic KMiddle of an edge joining two hexagonal faces LCenter of a hexagonal face UMiddle of an edge joining a hexagonal and a square face WCorner point XCenter of a square face Body-centered cubic HCorner point joining four edges NCenter of a face PCorner point joining three edges Hexagonal ACenter of a hexagonal face HCorner point KMiddle of an edge joining two rectangular faces LMiddle of an edge joining a hexagonal and a rectangular face MCenter of a rectangular face

23 Ebenen und Richtungen

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30 Bandstruktur von Cu d-Elektronen

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35 Halbmetalle: Bandstruktur von Bi

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