Numbers for Point Defect Diffusion

	Here a few numbers to point defect diffusion
		Numbers like this always should be taken with a grain of salt; they are often to a bit of doubt. It is not uncommon that newer measurements or new interpretations of old measurements give quite different results.
		Diffusing Atom Host Crystal Diffusion Mechanism Migration Enthalpy (eV) D0 [cm2/s] C Fe interstitial 1,25 0,008 N Fe interstitial 0,78 0,007 H Fe interstitial 0,43 0,01 Ni Fe substitutional 2,86 0,5 Co Fe substitutional 2,34 0,2 Si Fe substitutional 2,08 0,4 Al Cu substitutional 1,69 0,07 S GaAs substitutional 4,0 4000 Zn GaAs substitutional 2,47 1,5 · 10–8 P Si substitutional As Si substitutionell B Si substitutional Si Si O Si Cu Si Li Si

With frame

3.1.1 Diffusion and Point Defects

Exercise 4.2-1 Diffusion During Cooling

© H. Föll (Defects - Script)