Room temperature ferromagnetism of a double-layer Dy1−xNix/Ni structure: in situ magneto-optical measurements

The double-layer Dy_1−x Ni _x /Ni structures have been studied in situ in an ultrahigh-vacuum chamber by the original technique using the surface meridional Kerr effect directly in the course of deposition. It has been shown that a layer of Dy_1−x Ni _x alloy is ferromagnetically ordered at room temperature.