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Crystal defect classification point defects self-vacancy, self-interstitial interstitial interstitial and substitutional impurities point defect pairs,

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Presentation on theme: "Crystal defect classification point defects self-vacancy, self-interstitial interstitial interstitial and substitutional impurities point defect pairs,"— Presentation transcript:

1 crystal defect classification point defects self-vacancy, self-interstitial interstitial interstitial and substitutional impurities point defect pairs, clusters line defects dislocations planar defects grain boundaries, surfaces

2 point defects vacancies & interstitials substitutional & inter- stitial impurities

3 Schottky defect

4 edge and screw disocations

5 Burgers vector of edge dislocation

6 Burgers vector of screw dislocation

7 Burgers vector example in bcc lattice

8 stacking faults of (111) planes in fcc lattice intrinsic extrinsic

9 low-angle pure tilt boundary in Ge

10 high-resolution TEM of large-angle (~24 o ) tilt-type grain boundary in Au film

11 strain field and strain energy of dislocations

12 interaction of edge dislocations

13 soap bubble model of grain boundary

14 slip of edge dislocation

15 self-diffusion in Ag bulk and grain boundary

16 diffusivities D in bulk vs thin films

17 combined grain boundary and bulk diffusion

18 Ga diffusion through polycristalline Al

19 electromigration

20 electromigration processes

21 Material Today January 2005

22 dislocation loop in {111} plane changes band gap

23 defect engineered light emitting diode

24 Dislocation Engineered Light Emitting Diode (DELED)


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