Issue |
Microsc. Microanal. Microstruct.
Volume 7, Number 3, June 1996
|
|
---|---|---|
Page(s) | 153 - 160 | |
DOI | https://doi.org/10.1051/mmm:1996111 |
DOI: 10.1051/mmm:1996111
Cross-Sectional Observations of Polymorphic FeGe Interphases
Kazutomo Suenaga1, Alain Thorel1, Philippe Houdy2 et Christian Colliex31 Centre des Matériaux Pierre-Marie Fourt, École Nationale Supérieure des Mines de Paris, BP 87, 91003 Évry, France
2 Laboratoire Multicouches Nanométriques, Université d'Évry, Bd des Coquibus, 91025 Évry, France
3 Laboratoire de Physique des Solides, URA CNRS 002, Bâtiment 510, Université Paris-Sud, 91405 Orsay Cedex, France
Abstract
Cross-sectional microscopy is performed on
multilayers with steep
concentration gradients. A profile in high angle annular dark
field imaging mode demonstrates the
presence of an intermetallic phase appearing brighter in
Z-contrast, which is proved to be
alloy by
means of associated quantitative
contrast calculations. Fourier analysis of lattice fringes observed by
transmission electron microscopy reveals the previously found
non-magnetic interphase as
. These results
are discussed here with reference to
recent work using Mössbauer spectroscopy, kinetic ellipsometry,
and Fe L-edge EELS
analysis. An attempt is then made to correlate them with phase separation
models involving nanometric inhomogeneities in FeGe alloys.
6155H - Crystal structure of specific alloys.
6855 - Thin film growth, structure, and epitaxy.
Key words
crystal structure -- germanium alloys -- iron alloys -- polymorphism -- transmission electron microscopy -- polymorphic FeGe interphases -- cross sectional microscopy -- steep concentration gradients -- high angle annular dark field imaging mode -- Fourier analysis -- lattice fringes -- transmission electron microscopy -- Mossbauer spectroscopy -- kinetic ellipsometry -- Fe L edge EELS analysis -- FeGe
© EDP Sciences 1996