Phonon mechanism for the orthorhombic distortion in ${FeSi}_{2}$ as compared to cubic ${CoSi}_{2}$

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1 October 1996

journal article
research article
Published by American Physical Society (APS) in Physical Review B

Vol. 54 (13) , 9196-9203
https://doi.org/10.1103/physrevb.54.9196

Abstract

We analyze the leading role of the electron-phonon interaction in promoting the structural distortion from fluorite to orthorhombic

{FeSi}_{2}

by comparing a tight-binding calculation of the force constants and phonon dispersion relations in

{FeSi}_{2}

to the ones in

{CoSi}_{2}

, a related compound which is stable in fluorite phase. © 1996 The American Physical Society.

Keywords

This publication has 23 references indexed in Scilit:

Stability hierarchy of the pseudomorphic FeSi2 phases: α, γ, and defected CsCl
Applied Physics Letters, 1995
Gas source molecular beam epitaxy of FeSi2/Si(111) heterostructures
Applied Physics Letters, 1993
Epitaxial growth of Fe-Si compounds on the silicon (111) face
Physical Review B, 1992
Growth and characterization of epitaxial Ni and Co silicides
Materials Science Reports, 1992
Real-Space Imaging of the First Stages of FeSi ₂ Epitaxially Grown on Si(111): Nucleation and Atomic Structure
Europhysics Letters, 1992
Epitaxial silicides with the fluorite structure
Applied Surface Science, 1991
Electronic structure of β- ${FeSi}_{2}$
Physical Review B, 1990
Lattice dynamics of Si calculated with a semiempirical approach
Physical Review B, 1989
Electronic structure and properties of ${NiSi}_{2}$ and ${CoSi}_{2}$ in the fluorite and adamantane structures
Physical Review B, 1987
Structure cristalline du disiliciure de fer, FeSi2β
Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials, 1971