POLARIZING TI(1-U)X(U) FEXCOYVZ SUPERMIRRORS

Polarizing multilayers and supermirrors composed of Ti(1-u)X(u) and Fe xCoyVz have been produced using DC-magnetron sputtering. The structure of the samples has been characterized by neutron and X-ray diffractio n. The results show that the smoothness of the layers can be improved by adding controlled amounts of alloying materials, an effect that has already been observed for Ni/Ti supermirrors. Flipping ratios of more than 40 and reflectivities of more than 85% at twice the critical ang le of Ni are obtained, depending on the concentrations of the material s, u, x, y, z. The sputtering process can be optimized in such a way t hat the magnetization within the plane is anisotropic, thus allowing a saturation of the samples in low fields.