STRUCTURE AND MAGNETISM OF MBE-GROWN CO CU MULTILAYERS/

Structural and magnetic properties of Co/Cu multilayers deposited in t he ultra-high vacuum molecular beam epitaxy system on glass substrates with different modulations periods were investigated. A structural ch aracterization was performed by means of RHEED and Auger spectroscopy (in situ), small angle X-ray reflectivity and scanning tunneling micro scopy. The samples obtained have a textured, polycrystalline layered s tructure for deposition at room temperature. Magnetization and in-plan e magnetoresistance measurements were performed as a function of Cu an d Co layer thicknesses. An influence of different buffers and of inter face quality on magnetic properties was investigated.