ABSTRAK
The magnetoresistivity and Hall resistivity of Pd/Co multilayers have been investiagted down to 4.2 K, focusing on the difference between samples with in-plane perpendicular magnetization. At 4.2 K, a sign change of the extraordinary Hall coefficient as a funktion of Co thickness is observed at ~2 A. For a Co layer thickness of 2 A, an anomaly is found in the temperature dependece of both resistivity and Hall coefficient near 250 K, suggesting a magnetic phase transition in an alloyed interface region