Search: WFRF:(Assmus Michael) >
The Samson phase, β...
The Samson phase, β-Mg2Al3, revisited
-
- Feuerbacher, Michael (author)
- Jülich Research Centre
-
- Thomas, Carsten (author)
- Jülich Research Centre
-
- Makongo, Julien P.A. (author)
- Max Planck Institute for Chemical Physics of Solids
-
show more...
-
- Hoffmann, Stefan (author)
- Max Planck Institute for Chemical Physics of Solids
-
- Carrillo-Cabrera, Wilder (author)
- Max Planck Institute for Chemical Physics of Solids
-
- Cardoso, Raul (author)
- Max Planck Institute for Chemical Physics of Solids
-
- Grin, Yuri (author)
- Max Planck Institute for Chemical Physics of Solids
-
- Kreiner, Guido (author)
- Max Planck Institute for Chemical Physics of Solids
-
- Joubert, Jean Marc (author)
- Versailles Saint-Quentin-en-Yvelines University
-
- Schenk, Thomas (author)
- Ecole des Mines de Nantes
-
- Gastaldi, Joseph (author)
- Aix-Marseille University
-
- Nguyen-Thi, Henri (author)
- Aix-Marseille University
-
- Mangelinck-Nöel, Nathalie (author)
- Aix-Marseille University
-
- Billia, Bernard (author)
- Aix-Marseille University
-
- Donnadieu, Patricia (author)
- Institut National Polytechnique De Grenoble (ENSEEG - INP Grenoble)
-
- Czyrska-Filemonowicz, Aleksandra (author)
- AGH University of Science and Technology
-
- Zielinska-Lipiec, Anna (author)
- AGH University of Science and Technology
-
- Dubiel, Beata (author)
- AGH University of Science and Technology
-
- Weber, Thomas (author)
- ETH Zürich
-
- Schaub, Philippe (author)
- ETH Zürich
-
- Krauss, Günter (author)
- ETH Zürich
-
- Gramlich, Volker (author)
- ETH Zürich
-
- Christensen, Jeppe (author)
- Stockholm University,Lund University,Lunds universitet,-lup-obsolete,Forskargrupper vid Lunds universitet,Inorganic Chemistry Group, Ebbe Nordlander-lup-obsolete,Lund University Research Groups
-
- Lidin, Sven (author)
- Stockholm University
-
- Fredrickson, Daniel (author)
- Stockholm University
-
- Mihalkovic, Marek (author)
- Institute of Physics, Slovak Academy of Sciences
-
- Sikora, Wieslawa (author)
- AGH University of Science and Technology
-
- Malinowski, Janusz (author)
- AGH University of Science and Technology
-
- Brühne, Stefan (author)
- Goethe University
-
- Proffen, Thomas (author)
- Los Alamos National Laboratory
-
- Assmus, Wolf (author)
- AGH University of Science and Technology
-
- De Boissieu, Marc (author)
- Institut National Polytechnique De Grenoble (ENSEEG - INP Grenoble)
-
- Bley, Francoise (author)
- Institut National Polytechnique De Grenoble (ENSEEG - INP Grenoble)
-
- Chemin, Jean Louis (author)
- Institut National Polytechnique De Grenoble (ENSEEG - INP Grenoble)
-
- Schreuer, Jürgen (author)
- Goethe University
-
- Steurer, Walter (author)
- ETH Zürich
-
show less...
-
(creator_code:org_t)
- 2009-09-25
- 2007
- English 30 s.
-
In: Zeitschrift fur Kristallographie. - : Walter de Gruyter GmbH. - 0044-2968. ; 222:6, s. 259-288
- Related links:
-
http://dx.doi.org/10... (free)
-
show more...
-
https://lup.lub.lu.s...
-
https://doi.org/10.1...
-
show less...
Abstract
Subject headings
Close
- The Al-Mg phase diagram has been reinvestigated in the vicinity of the stability range of the Samson phase, β-Mg2Al3 (cF1168). For the composition Mg38.5Al61.5, this cubic phase, space group Fd3̄m (no 227), a = 28.242(1) Å, V = 22526(2) Å3, undergoes at 214°C a first-order phase transition to rhombohedral β′-Mg2Al3, (hR293), a = 19.968(1) Å, c = 48.9114(8) Å, V = 16889(2) Å3, (i.e. 22519 Å3 for the equivalent cubic unit cell) space group R3m (no 160), a subgroup of index four of Fd3̄m. The structure of the β-phase has been redetermined at ambient temperature as well as in situ at 400°C. It essentially agrees with Samson's model, even in most of the many partially occupied and split positions. The structure of β′-Mg 2Al3 is closely related to that of the β-phase. Its atomic sites can be derived from those of the β-phase by group-theoretical considerations. The main difference between the two structures is that all atomic sites are fully occupied in case of the β′-phase. The reciprocal space, Bragg as well as diffuse scattering, has been explored as function of temperature and the β- to β′-phase transition was studied in detail. The microstructures of both phases have been analyzed by electron microscopy and X-ray topography showing them highly defective. Finally, the thermal expansion coefficients and elastic parameters have been determined. Their values are somewhere in between those of Al and Mg.
Keyword
- CMA
- Elastic parameters
- Electron microscopy
- Magnesium aluminides
- Microstructure
- Powder diffraction structure analysis
- Samson phase
- X-ray diffraction
Publication and Content Type
- for (subject category)
- ref (subject category)
Find in a library
To the university's database
- By the author/editor
-
Feuerbacher, Mic ...
-
Thomas, Carsten
-
Makongo, Julien ...
-
Hoffmann, Stefan
-
Carrillo-Cabrera ...
-
Cardoso, Raul
-
show more...
-
Grin, Yuri
-
Kreiner, Guido
-
Joubert, Jean Ma ...
-
Schenk, Thomas
-
Gastaldi, Joseph
-
Nguyen-Thi, Henr ...
-
Mangelinck-Nöel, ...
-
Billia, Bernard
-
Donnadieu, Patri ...
-
Czyrska-Filemono ...
-
Zielinska-Lipiec ...
-
Dubiel, Beata
-
Weber, Thomas
-
Schaub, Philippe
-
Krauss, Günter
-
Gramlich, Volker
-
Christensen, Jep ...
-
Lidin, Sven
-
Fredrickson, Dan ...
-
Mihalkovic, Mare ...
-
Sikora, Wieslawa
-
Malinowski, Janu ...
-
Brühne, Stefan
-
Proffen, Thomas
-
Assmus, Wolf
-
De Boissieu, Mar ...
-
Bley, Francoise
-
Chemin, Jean Lou ...
-
Schreuer, Jürgen
-
Steurer, Walter
-
show less...
- Articles in the publication
-
Zeitschrift fur ...
- By the university
-
Lund University