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Strukturelle Defekte

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Strukturelle Defekte

1. Dimension: 0D, 1D, und 2D Defekte

2. 0D Defekte = Punktdefekte 1. Leerstellen

2. Zwischengitteratome 3. Fremdatome

3. 1D Defekte = Versetzungen 1. Burgers-Vektor

2. Stufenversetzung

3. Schraubenversetzung

4. Mechanische Festigkeit

5. Frenkel-Kontorova-Model

4. 2D Defekte

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Punktdefekte

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Farbzentren (F-Zentren)

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N-V centres in diamond

Nitrogen is by far the most common impurity found in gem diamonds

Nitrogen is responsible for the yellow and brown in diamonds.

N for Nitrogen

V for Vacancy (missing carbon atom)

N-V centres are colored centers

D. Awschalom et al., Sci. Amer. (Oct. 2007), p.90

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Nitrogen-vacancy (NV) defect in diamond

G.Balasubramanian , et al. Nature Materials 8, 383 (2009)

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Versetzungen

Burgers-Vektor

Stufenversetzung Schraubenversetzung

L L

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