title: High pressure study of Pu(0.92)Am(0.08) binary alloy.
abstract: The phase transitions (by means of x-ray diffraction) and electrical resistivity of a Pu(0.92)Am(0.08) binary alloy were determined under pressure (up to 2 GPa). The evolution of atomic volume with pressure gives detailed information concerning the degree of localization of 5f electronic states and their delocalization process. A quasi-linear V = f(P) dependence reflects subtle modifications of the electronic structure when P increases. The electrical resistivity measurements reveal the very high stability of the δ phase for pressures less than 0.7 GPa, since no martensitic-like transformation occurs at low temperature. Remarkable electronic behaviours have also been observed. Finally, resistivity curves have shown the temperature dependence of the phase transformations together with unexpected kinetic effects.
authors.affiliation: CEA, Valduc, F-21120 Is-sur-Tille, France.
authors.forename: V
authors.initials: V
authors.lastname: Klosek
authors.forename: J C
authors.initials: JC
authors.lastname: Griveau
authors.forename: P
authors.initials: P
authors.lastname: Faure
authors.forename: C
authors.initials: C
authors.lastname: Genestier
authors.forename: N
authors.initials: N
authors.lastname: Baclet
authors.forename: F
authors.initials: F
authors.lastname: Wastin