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Low temperature specific heat of [formula omitted]U

The low temperature specific heat of the weakly magnetic system Th U has been measured in both the normal and superconducting states. U impurities are found to enhanve the normal state electronic specific heat coefficient γ at an unusually large rate of 4.85 ± 0.50 mJ/mole °K 2 at. % U. The specific...

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Bibliographic Details
Published in:Solid state communications 1972-03, Vol.10 (5), p.459-463
Main Authors: Luengo, C.A., Cotignola, J.M., Sereni, J.G., Sweedler, A.R., Maple, M.B., Huber, J.G.
Format: Article
Language:English
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Summary:The low temperature specific heat of the weakly magnetic system Th U has been measured in both the normal and superconducting states. U impurities are found to enhanve the normal state electronic specific heat coefficient γ at an unusually large rate of 4.85 ± 0.50 mJ/mole °K 2 at. % U. The specific heat jump at the superconducting transition for an alloy of composition 0.075 at. % U follows the BCS law of corresponding states suggesting that the system Th U is essentially non-magnetic at superconducting temperatures. Die spezifische Wärme wurde an dem schwach magnetischen System Th U bei tiefen Temperaturen im normalen und im supraleitenden Zustand gemessen. Uranverrunreinigungen erhöhen den Linearkoeffizienten] γ der spezifischen Wärme mit der ungewöhnlich hohen Rate von (4.85 ± 0.50) mjoule/(Mol°K 2 at % U). Der Sprung der spezifischen Wärme bei der supraleitenden Überganstemperatur einer Thorium-Legierung mit 0.075 at % Uran folgt dem BCS-Gesetz der korrespondierenden Zustände. Th U ist daher offenbar im wesentlichen unmagnetisch bei Heliumtemperaturen.
ISSN:0038-1098
1879-2766
DOI:10.1016/0038-1098(72)90919-2