Conversion electron Mössbauer spectroscopy and transmission electron microscopy investigations of epitaxially stabilized c-FeSi having the CsCl structure reveal a self-organized layered structure. Upon annealing the structural phase transition to the bulk stable ∈-FeSi phase leaves the superlattice periodicity intact with surprisingly sharp interfaces. A distorted CsCl phase which tranforms into the ∈-FeSi phase at a temperature slightly higher than that for the partially relaxed c-FeSi is identified in the as-grown sample. Molecular-dynamics simulations have been used to visualize and interpret the distorted phase and the structural phase transition.
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)
Fanciulli, M., Weyer, G., Chevallier, J., Von Känel, H., Deller, H., Onda, N., ... Celino, M. (1997). Self-organized layered structure in epitaxially stabilized FeSi. Europhysics Letters, 37(2), 139 - 141. https://doi.org/10.1209/epl/i1997-00123-2