Title: Low Temperature Heat Capacity and Magnetic Properties of UF3
Citation: INORGANIC CHEMISTRY vol. 50 no. 20 p. 10102–10106
Publication Year: 2011
JRC N°: JRC65260
ISSN: 0020-1669
URI: http://pubs.acs.org/doi/abs/10.1021/ic2010453
DOI: 10.1021/ic2010453
Type: Articles in periodicals and books
Abstract: The low temperature heat capacity of UF3 has been measured using an adiabatic low temperature calorimeter in the temperature range from 10 K to 350 K. These data are complemented at the lowest temperature region with data obtained with a Quantum Design PPMS-14 device in the temperature range from 0.5 K to 20 K. Good agreement between both techniques has been found and from these experimental results the absolute entropy of UF3 at 298.15 K has been determined as 126.8+/- 2.5 JK-1 mol-1. On the basis of the specific heat data and the magnetization measurement performed on a SQUID device, a transition at 1.59 K attributed to Curie temperature of a ferromagnetic transition has been found in this study. This observation makes UF3 a unique compound with an unusually low ferromagnetic ordering termperature.
JRC Directorate:Nuclear Safety and Security

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