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Single crystals of (Pu(1-x)U(x))Sb (with x = 0.25, 0.5 and 0.75) and (Pu(1-x)Y(x))Sb (with x = 0.05, 0.1, 0.4, 0.6, 0.75 and 0.85) were prepared by mineralization and encapsulated for resistivity measurements down to 1.5 K. Resistivity of Pu(0.75)U(0.25)Sb shows two anomalies at 96 K and 56 K suggesting two magnetic transitions respectively of antiferromagnetic and ferromagnetic type. Pu(0.5)U(0.5)Sb displays a more complex behaviour. A first transition is observed around 155 K, followed by a sharp maximum at 120 K and a second anomaly around 35 K. (Pu(1-x)Y(x))Sb measured samples show a logarithmic increase of the resistivity with decreasing temperature, suggesting a Kondo behaviour. For x = 0.4 and 0.6 two magnetic transitions are deduced at 36 K/20 K and 24 K/7 K respectively, and for x = 0.75 only one transition is seen around 14 K.

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Authors: REBIZANT J, JRC Karlsruhe (DE);WASTIN F, JRC Karlsruhe (DE);RIJKEBOER C, JRC Karlsruhe (DE);BEDNARCZYK E, JRC Karlsruhe (DE);LEFÉBVRE P, JRC Karlsruhe (DE)
Bibliographic Reference: Paper presented: Actinides '97, Baden-Baden (DE), September 21-26, 1997
Availability: Available from (1) as Paper EN 41083 ORA
Record Number: 199810060 / Last updated on: 1998-02-03
Original language: en
Available languages: en
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