Am. Stoneham, Comment on 'The lattice contraction of nanometre-sized Sn and Bi particlesproduced by an electrohydrodynamic technique', J PHYS-COND, 11(42), 1999, pp. 8351-8352
The contraction in lattice parameter observed in nm-sized grains of Sn and
Pi appears to be dominated by the effects of surface stress, not the presen
ce of vacancies.