Abstract
Abstract Self-diffusion of Fe and impurity diffusion of Ge in the B20 phase FeSi have been studied as a function of temperature using the radiotracer method with isotopes 59Fe and 71Ge. 71Ge has been used to simulate Si self-diffusion. Both diffusivities are very small, and their values for Fe are about one to two orders of magnitude smaller than for Ge. This uncoupled diffusion may be explained by vacancy-based diffusion on the Fe and Si sublattice. Both diffusivities reach a value of about D(T M) ≈ 10−14m2s−1 at T M = 1683 K. which is more typical for semiconductors than for metals. Results are discussed in comparison with other diffusion data on phases of the Fe-Si system and on other transition metal silicides.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
