| Issue |
Europhys. Lett.
Volume 37, Number 2, January II 1997
|
|
|---|---|---|
| Page(s) | 139 - 144 | |
| Section | Condensed matter: electronic structure, electrical, magnetic and optical properties | |
| DOI | https://doi.org/10.1209/epl/i1997-00123-2 | |
| Published online | 01 September 2002 | |
Self-organized layered structure in epitaxially stabilized FeSi
1
Institute of Physics and Astronomy, University of Aarhus,
DK-8000 Aarhus C, Denmark
2
Laboratory for Solid State Physics, ETH-Zürich -
CH-8093 Zürich, Switzerland
3
Istituto Nazionale di Fisica della Materia,
Dipartimento di Fisica dell'Universita', Via Celoria 16,
I-20133 Milano, Italy.
Received:
25
September
1996
Accepted:
28
November
1996
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 ϵ-FeSi phase leaves the superlattice periodicity intact with surprisingly sharp interfaces. A distorted CsCl phase which tranforms into the ϵ-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.
PACS: 76.80.+y – Mössbauer effect; other gamma-ray spectroscopy / 75.50.Bb – Fe and its alloys / 64.70.Kb – Solid-solid transitions
© EDP Sciences, 1997
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