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Facit till fasta tillståndets fysik<br />

Crystal Structure (SC):<br />

1) a) 0.52 b) 0.68 c) 0.74<br />

ρ fcc<br />

2) =1.09<br />

ρbcc 3) oktaedrisk: 0.147a tetraedrisk: 0.0794a<br />

4) 2.86 Å<br />

5)<br />

3<br />

€<br />

4 a<br />

Lattice Dynamic (LD):<br />

1) 12000 m/s<br />

Free Electron Model (FEM):<br />

1) Na: 3.15 eV Li: 4.70 eV Al: 11.66 eV<br />

2) 38 nm<br />

3) 3.65*10 6 V/m 2.14*10 14 A/m 2<br />

4) 8.4*10 -13 Ωm/K<br />

5) a) Na: 1.25; K: 1.24; Rb: 1.26 b) γ=1.75 J/K 2 ,kmol<br />

6) D(ε) = Am e<br />

πh 2<br />

7) 7.3*10 -15 s 15 nm 3.5*10 -5 m/s<br />

8) a) 4.39*10 -24 eV b) 4.30*10 -12 eV c) 0.43 eV<br />

10) 4.2 eV 1.2*10 6 m/s<br />

11) 0.15 J/K 3.31 K<br />

12) 3.45<br />

Semiconductors (SE):<br />

1) µ(300)=0.65 eV µ(0)=0.63 eV<br />

2) 0.22 eV<br />

3) Si: 6.9*10 15 m -3<br />

Ge: 1.6*10 20 m -3<br />

4) 20.8 (Ωm) -1<br />

5) n=1.5*10 18 m -3<br />

6) 0.96 eV 2.7*10 17 m -3<br />

7) 8.41*10 -4 Ωm<br />

8) 10 -3<br />

The p-n Junction (PN):<br />

1) 2.49*10 8<br />

2) 2 mA<br />

3) 47 mA<br />

4) –<br />

Superconductors (Su):<br />

1) 55 A<br />

2) 3.70 K; 30.8 mT<br />

p=3.2*10 20 m -3<br />

8<br />

N d

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