THE MAGNETIC PHASE-DIAGRAM OF UPT3 ALLOYED WITH PD

In the course of an investigation of pseudobinary compounds based on h eavy-fermion UPt3, we have prepared U(Pt-0.98 Pd-0.02)(3) in single-cr ystalline form. The location in the B-T plane of the antiferromagnetic phase boundary and of the metamagnetic-like transition field has been measured by means of high-field magnetoresistance experiments (B < 25 T, B parallel to b). The new results are discussed with reference to the magnetic phase diagrams reported for other compounds in the U(Pt, Pd)(3) series.