1989 Volume 58 Issue 8 Pages 2654-2657
The electrical resistivity and magnetization of UPdGe have been measured in magnetic fields up to 60 kOe. We have found for the first time that the localized U moments enter a ferromagnetic state below 33 K following the spin-periodic ordered state below 55 K. A decrease of the resistivity is observed at both magnetic phase transitions. In the spin-periodic state, the large negative magnetoresistance accompanied by metamagnetismlike transition is observed. The ferromagnetic order reduces the electrical resistivity to a greater extent than the spin-periodic order. The results indicate that the effect of the magnetic superzone, as well as the effect of the magnetic scattering, is important when the magnetic ordering changes.
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