MAGNETORESISTANCE STUDY OF CO CU/NIFE/CU MULTILAYERS PREPARED ON V-GROOVE SUBSTRATES/

Using multilayers prepared on the substrates with V-groove microstruct ures, we have measured the magnetoresistance (MR) both with CLP geomet ry and with current-at-an-angle-to-plane (CAP) geometry for the same s ample. It was confirmed that CAP-MR is larger than CLP-MR. We estimate d the CPP-MR (current-perpendicular-to-plane-magnetoresistance) value by extrapolation using observed CIP-MR and CAP-MR values. The deduced CPP data were analyzed by the series resistor model and the obtained p arameters were compared with the results found by other experimental m ethods. The temperature dependence is discussed by the Fert-Campbell m odel and the spin-mixing resistivity is concluded to be much larger at the interface than in the magnetic layer.