Aluminium has a vacancy formation energy

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

Aluminium has a vacancy formation energy εv=0.67 eV\varepsilon_v = 0.67\ \mathrm{eV}. Find the equilibrium fraction of vacant lattice sites in aluminium at 600 K600\ \mathrm{K}, a temperature well below its melting point.

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