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Abstract

The high pressure structural behaviour of two berkelium - californiun alloys was studied up to about 47 Gpa. The alloys had been formed through the ingrowth of 249-Cf into 249-Bk by beta- decay. The berkelium rich alloy (about 35% Cf) exhibited the same phases as pure californium. An approximately linear increase of transition pressures with californium content was observed. The results are compared with data obtained previously for the high pressure behaviour of the pure americium, curium, berkelium and californium metals. As in the pure metals, the transformation of the alloys to the alpha-uranium-type structure, accompanied by a sudden volume decrease, is interpreted as the onset of 5f electron itinerancy.

Additional information

Authors: ITIE J P, JRC KARLSRUHE ESTAB. (GERMANY);UNIVERSITY OF TENNESSEE, KNOXVILLE (USA) AND TRANSURANIUM RESEARCH LABORATORY, OAK RIDGE NATIONAL LABORATORY, OAK RIDGE (USA);DUFOUR C, JRC KARLSRUHE ESTAB. (GERMANY);UNIVERSITY OF TENNESSEE, KNOXVILLE (USA) AND TRANSURANIUM RESEARCH LABORATORY, OAK RIDGE NATIONAL LABORATORY, OAK RIDGE (USA);BENEDICT U, JRC KARLSRUHE ESTAB. (GERMANY);UNIVERSITY OF TENNESSEE, KNOXVILLE (USA) AND TRANSURANIUM RESEARCH LABORATORY, OAK RIDGE NATIONAL LABORATORY, OAK RIDGE (USA);PETERSON J R, JRC KARLSRUHE ESTAB. (GERMANY);UNIVERSITY OF TENNESSEE, KNOXVILLE (USA) AND TRANSURANIUM RESEARCH LABORATORY, OAK RIDGE NATIONAL LABORATORY, OAK RIDGE (USA);HAIRE R G JRC KARLSRUHE ESTAB. (GERMANY), JRC KARLSRUHE ESTAB. (GERMANY);UNIVERSITY OF TENNESSEE, KNOXVILLE (USA) AND TRANSURANIUM RESEARCH LABORATORY, OAK RIDGE NATIONAL LABORATORY, OAK RIDGE (USA);UNIVERSITY OF TENNESSEE, KNOXVILLE (USA) AND TRANSURANIUM RESEARCH LABORATORY, OAK RIDGE NATIONAL LABORATORY, OAK RIDGE (USA), JRC KARLSRUHE ESTAB. (GERMANY);UNIVERSITY OF TENNESSEE, KNOXVILLE (USA) AND TRANSURANIUM RESEARCH LABORATORY, OAK RIDGE NATIONAL LABORATORY, OAK RIDGE (USA)
Bibliographic Reference: J. PHYS. F: MET. PHYS., VOL. 15 (1985), PP. L213- L219.
Record Number: 1989124081100 / Last updated on: 1987-01-01
Category: PUBLICATION
Available languages: en