CEMS STUDY OF AU FE MULTILAYERS IN AN ANNEALING PROCESS/

The magnetic and structural properties of Au/Fe multilayers (Mts) have been investigated in an annealing process by means of conversion elec tron Mossbauer spectroscopy (GEMS). In the [1.2 nm Au/0.3 nm Fe] and [ 1.2 nm Au/0.5 nm Fe] MLs, the CEM spectra show sextet magnetic splitti ng peaks, the broad band peaks and the doublet peaks with rising annea ling temperature. These are suggested to be related to the change in t he interface structure between Au and Fe layers and the formation of F e islands having superparamagnetic nature in the annealing process.