Haji Shirinzadeh Department semiconductors (Device Fabrication), Surface Physics and Thin Films, Material and Energy Research Center (MERC), Alvand Avenue, Tehran, Iran h_szadeh@merc.ac.ir International Journal of Fundamental Physical Sciences (IJFPS) 4 2 55-61 June, 2014 2231-8186 https://doi.org/10.14331/ijfps.2014.330066 This paper presents studies of magnetic multilayer structures and the advantages of Molecular Beam Epitaxy (MBE) for fabricating these systems. It discusses interlayer exchange coupling, growth-induced defects, and surface morphology, analyzing the impact of growth methods like MBE and sputtering on giant magnetoresistance (GMR) in Co/Cu multilayers. The study demonstrates how growth conditions affect magnetic properties and interlayer exchange mechanisms. Thin films, CMR, magneto-resistance https://creativecommons.org/licenses/by/4.0/