First Study of Iron Self-Diffusion in Fe2O3 Single Crystals by SIMS
Iron bulk self-diffusion coefficients were measured in Fe2O3 single crystals using an original methodology based on the utilization of 57Fe stable isotope as iron tracer and depth profiling by secondary ion mass spectrometry (SIMS). The iron self-diffusion coefficients measured along c-axis direction, between 900 and 1100o C, in oxygen atmosphere, can be described by the following Arrhenius relationship: D(cm2/s)= 5.2x106 exp [-510 (kJ/mol)/RT], and are similar to reliable data available in the literature, obtained by means of radioactive techniques.
M. Danielewski, R. Filipek, R. Kozubski, W. Kucza, P. Zieba, Z. Zurek
A. C. S. Sabioni et al., "First Study of Iron Self-Diffusion in Fe2O3 Single Crystals by SIMS", Defect and Diffusion Forum, Vols. 237-240, pp. 277-281, 2005