Superconducting Properties of Protactinium

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Science  13 Jul 1979:
Vol. 205, Issue 4402, pp. 188-190
DOI: 10.1126/science.205.4402.188


The superconducting transition temperature and upper critical magnetic field of protactinium were measured by alternating-current susceptibility techniques. Since the superconducting behavior of protactinium is affected by its 5f electron character, it is clear now that protactinium is a true actinide element.