Numéro
J. Phys. IV France
Volume 04, Numéro C3, Février 1994
36ème Colloque de Métallurgie de l'INSTN
CHANGEMENTS DE PHASES ET MICROSTRUCTURES
Page(s) C3-163 - C3-167
DOI http://dx.doi.org/10.1051/jp4:1994323
36ème Colloque de Métallurgie de l'INSTN
CHANGEMENTS DE PHASES ET MICROSTRUCTURES

J. Phys. IV France 04 (1994) C3-163-C3-167

DOI: 10.1051/jp4:1994323

Packing of ovaloïd atoms in actinide structures

V. DMITRIEV, B. METTOUT and P. TOLEDANO

Laboratoire des Transitions de Phases, 33 rue Saint-Leu, 80000 Amiens, France


Abstract
The atomistic mechanisms which result in the structures of eleven actinide elements are deduced from a parent bcc structure. The rich polymorphism and idiosyncratic structures found in uranium, neptunium and plutonium are interpreted in terms of close packings of ovaloïd atoms. The incommensurate structure found in α-U is discussed in this framework.



© EDP Sciences 1994