Thin films preparation by rf-sputtering of copper/iron ceramic targets with Cu/Fe=l: From nanocomposites to delafossite compounds

摘要

In the Cu-Fe-O phase diagram, delafossite CuFeO_2 is obtained for the Cu~1 oxidation state and for the Cu/Fe=l ratio. By decreasing the oxygen content, copper/spinel oxide composite can be obtained because of the reduction and the disproponation of cuprou