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Influence of off-stoichiometry on the properties of the heavy fermion superconductors UNi2Al3 and UPd2Al3

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Zitation

Schank, C., Jährling, F., Grauel, A., Borth, R., Helfrich, R., Lühmann, T., et al. (1994). Influence of off-stoichiometry on the properties of the heavy fermion superconductors UNi2Al3 and UPd2Al3. Journal of Alloys and Compounds, 213, 509-512. doi:10.1016/0925-8388(94)90975-X.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0019-E4F7-B
Zusammenfassung
We have investigated the influence of deviations from stoichiometry on the metallurgical, superconducting and magnetic properties of UNi2Al3 and UPd2Al3. Deviations from stoichiometry in UNi2Al3 generally increase the width of the superconducting transition and can lead to a complete suppression of the anomalies related to the antiferromagnetic (AF) ordering. By contrast, in UPd2Al3 we have observed a reduction in the superconducting transition temperature T-c whereas the AF transition is not affected. We discuss the implication of these results on the metallurgical phase diagram and on the nature of both the superconducting and the AF state of these compounds.