CoFe/Pt(xn) multilayer films with a small perpendicular magnetic anisotropy - art. no. 10J117

摘要

The effects of CoFe thickness, Pt thickness, and number of CoFe/Pt bilayers on the anisotropy and coercivity of CoFe/Ptxn multilayer films have been studied. These parameters are varied in an attempt to deposite CoFe/Ptxn multilayer films with well-defined small perpendicular magnetic anisotropies. Best results were obtained in a CoFe 3 angstrom/Pt 10 angstromx5 film with coercivity Hc = 42 Oe, perpendicular anisotropy H-k = 2200 Oe, and easy-axis remanence Mr/Ms = 1. Large Pt thickness tends to cause well-defined interfaces thus larger surface anisotropy. Large CoFe thickness and more number of bilayers tend to cause bow-tie shaped easy-axis loops and multiple domain structures. (c) 2005 American Institute of Physics.