Secondary ion mass spectrometry was used to determine the bulk diffusivity of In in single crystals between 602K and the melting point. The diffusion coefficients ranged from 3.3 x 10-12 to 6.0 x 10-21m2/s. Data which were based upon the matrix-normalized 115In+ signal yielded the most accurate Arrhenius parameters for a monovacancy mechanism in the low-temperature region. These were used to derive an expression of the form:

D (cm2/s) = 2.19 x 10-1 exp[-42.4(kcal/mol)/RT]

W.Gust, C.Ostertag, B.Predel, U.Roll, A.Lodding, H.Odelius: Philosophical Magazine A, 1983, 47[3], 395-406