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PH-571 Dr. Hla Ohio University

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1 PH-571 Dr. Hla Ohio University
Solid State Physics PH-571 Dr. Hla Ohio University

2 Chapter 1 CRYSTAL STRUCTURES

3 Lattice = A set of uniform points that fill the space
Lattice = A set of uniform points that fill the space. Basis = A basis can be single atoms, molecules or a group of atoms that can be attached to the lattice. Crystal structure = lattice + basis

4 Ag(111) surface (Single Crystal Silver Surface Structure)

5 Here, the lattice points are illustrated over single silver atoms (basis).

6 Wigner-Seitz Cell

7 Bravias Lattices Simple Cubic

8 Body Centered Cubic (bcc)

9

10 bcc

11 Primitive Cell (bcc)

12 Drawing of Face Centered Cubic (fcc)

13 Dimond Structure

14 Dimond Structure

15 Hexagonal Structure

16 CsCl Structure 8 Coordination number

17 NaCl Structure 6 Coordination Number

18 Hexagonal Close-Packed Structure (hcp)

19 Fcc packing

20 fcc Structure


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