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Title: The formation and thermal stability of ion-beam-synthesized ternary Me(x)Fe(1-x)Si(2) (Me=Co, Ni) in Si(111)
Authors: Vantomme, AndrĂ© ×
Wu, MF
Langouche, Guido
Tavares, J
Bender, H #
Issue Date: Dec-1995
Publisher: Elsevier science bv
Series Title: Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms vol:106 issue:1-4 pages:404-408
Abstract: Buried CoxFe1-x and NixFe1-x silicides were prepared by consecutive metal implantation in Si(111). Transmission-electron microscopy analysis shows strong evidence for the formation of metastable ternary Co0.5Fe0.5Si2 and Ni0.5Fe0.5Si2 precipitates during implantation, the lattice structure of which is believed to be mainly B-type oriented (twinned) CaF2. Annealing of the samples at 1000 degrees C results in coalescence of the silicide into continuous layers with sharp interfaces. During this high-temperature treatment, nearly full phase separation occurs in the case of Co0.5Fe0.5Si2, whereas for Ni0.5Fe0.5Si2 only the onset of phase separation is observed. Channeling spectrometry indicates a good alignment of the silicides with the substrate. Furthermore, all samples were studied with X-ray diffraction and Mossbauer spectrometry, in order to obtain detailed information on the strain and the phases present.
URI: 
ISSN: 0168-583X
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Nuclear and Radiation Physics Section
× corresponding author
# (joint) last author

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