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Oxo complexes of copper-zirconium alkoxides are produced by hydrolysis or oxidation with molecular oxygen. These oxide-alkoxide species have different thermal decomposition products when compared to alkoxides species due to increased number of O(super 2-) ligands and less metal segregation. Magnetic, spectroscopic and thermal studies of heterometallic alkoxides show that these compounds undergo internal redox with isopropoxide ligands yielding acetone, alcohol and copper metal.

Giant magnetoresistance (GMR) type Co-Cu multilayers and exchange-biased spin-valve (EBSV) type Co-Cu-Co tri-layers are fabricated by sputtering with a thin layer of Ag inserted between Co and Cu as a surface modifier (SM). Their magnetoresistances (MR) are measured in both current-perpendicular-to-plane (CPP) and current-in-plane (CIP) configurations. In all situations, the size of the MR change decreases as the Ag SM is introduced, and the effect is interface related. Index Terms--Current-in-plane (CIP), current-perpendicular-to-plane (CPP), exchange-biased spin-valve (EBSV), giant magnetoresistance (GMR), surface modifier.