Copper self-diffusion has and

PHYSICS · Subjective · Fermi University Physics · Condensed Matter, Materials & Soft Matter · Crystal structure, bonding and diffraction · Crystal structure, bonding and diffraction

Condensed Matter Physics, Ch Real crystals: vacancies, dislocations and the strength of metals

Problem

Copper self-diffusion has

D_0 = 2\times10^{-5}\ \mathrm{m^2\,s^{-1}}

and

Q = 2.0\ \mathrm{eV}

. Estimate, using the order-of-magnitude distance

\sqrt{Dt}

of Section 13.3, how far an atom diffuses in

4

hours at

1200\ \mathrm{K}

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