Pressure-induced phase transition in α-Pu

High purity α-Pu was studied by X-ray diffraction in a diamond anvil cell up to 62 GPa. A structural phase transition occurs around 40 GPa. The high pressure structure was indexed in a hexagonal lattice of space group P6 3/ m, a = 537.77 pm, c = 445.51 pm at 62 GPa, Z = 8. The bulk modulus B 0 of α-...

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Veröffentlicht in:	Journal of alloys and compounds 1993-01, Vol.190 (2), p.237-242
Hauptverfasser:	Dabos-Seignon, S., Dancausse, J.P., Gering, E., Heathman, S., Benedict, U.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Condensed matter: structure, mechanical and thermal properties Crystalline state (including molecular motions in solids) Crystallographic aspects of phase transformations pressure effects Exact sciences and technology Metals. Metallurgy Physics Structure of solids and liquids crystallography
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Zusammenfassung:	High purity α-Pu was studied by X-ray diffraction in a diamond anvil cell up to 62 GPa. A structural phase transition occurs around 40 GPa. The high pressure structure was indexed in a hexagonal lattice of space group P6 3/ m, a = 537.77 pm, c = 445.51 pm at 62 GPa, Z = 8. The bulk modulus B 0 of α-Pu was determined as 43(2) GPa, with a pressure derivative B 0 ′ = 15(2).
ISSN:	0925-8388 1873-4669
DOI:	10.1016/0925-8388(93)90404-B