Magnetotransport in microstripes patterned in ultrathin cobalt films

摘要

The magnetotransport properties are an attractive alternative to standard observation techniques for thecharacterization of the magnetization reversal in structures with reduced lateral dimensions (stripes). In particular, magentic films exhibit the so-called anomalous Hall effect which is very sensitivie to the local magnetic domain strucutres. We began to work with the model system Co/Au(111) grown on silicon dioxide. We presnet here a new method fo microstructuring magnetic multilayers, that avoid the use of technological processes on the multilaeyrs. Preliminary magnetotransport results in 50 mum wide stripes are presented and discussed.