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Abstract

High-pressure (up to 50 Gpa) X-ray diffraction studies were performed on PuBi using energy dispersive techniques with nominal collection angles of 5 degrees and 7 degrees. This compound, which exhibits a NaC1 (B1) type structure at ambient pressure, undergoes a crystallographic transition to a tetragonal P4/mmm phase at 10 Gpa, which remained up to 42 Gpa. A second phase transformation to a Cs C1-type -structure (B2) occurred above 42GPa. The first phase transformation is accomplished by 12% volume collapse; a volume irregularity was not observed for the second transition. The bulk modulus (Bo =61 Gpa) and its pressure derivative (Bo' =6.1) were calculated for PuBi from its pressure-volume resationship up to the first transition at 10 Gpa.

Additional information

Authors: MERESSE Y, Institute for Transuranium Elements, Karlsruhe (DE);HEATHMAN S, Institute for Transuranium Elements, Karlsruhe (DE);RIJKEBOER C, Institute for Transuranium Elements, Karlsruhe (DE);REBIZANT J, Institute for Transuranium Elements, Karlsruhe (DE)
Bibliographic Reference: Article: Journal of Alloys and Compounds, 1998
Record Number: 199910266 / Last updated on: 1999-03-12
Category: PUBLICATION
Original language: en
Available languages: en