Superconducting properties of protactinium.
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.
Smith
J L
JL
Spirlet
J C
JC
Müller
W
W