STRUCTURE AND MAGNETIC-PROPERTIES OF SPUTTERED FCC CO(111) FILMS GROWN ON A GLASS SUBSTRATE

FCC Co(1 1 1) films grown on glass substrate were prepared by sputteri ng technique. The structure and magnetic properties were studied. X-ra y diffraction studies show the Co films have a FCC structure with the (1 1 1) direction perpendicular to the film plane. The vibrating sampl e magnetometer yields a magnetization of 1230 emu/cm(3) and coercivity of 100 Oe at room temperature. Ferromagnetic resonance measurements w ere carried out at 9.77 GHz at room temperature. Spin waves were obser ved. The relation of resonant field H-n with the mode number n obeys t he so-called n(2) law. The exchange constant was determined to be A(Co ) = 3.0 x 10(-6) erg/cm. (C) 1998 Elsevier Science B.V. All rights res erved.