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 sputtering technique. The structure and magnetic properties were studied. X-ray diffraction studies show the Co films have a FCC structure with the (1 1 1) direction perpendicular to the film plane. The vibrating sample magnetometer yields a magnetization of 1230 emu/cm(3) and coercivity of 100 Oe at room temperature. Ferromagnetic resonance measurements were carried out at 9.77 GHz at room temperature. Spin waves were observed. The relation of resonant field H-n with the mode number n obeys the 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 reserved.