LASER SYNTHESIS AND MAGNETOOPTICS OF THIN AMORPHOUS MAGNETIC-FILMS

Nonequilibrium laser ablation of a five-component amorphous Fe-Co-Ni-S i-B magnetic ribbon was used to prepare thin magnetic films. An optica l method was developed for investigating the magnetic properties of th in films on the basis of the magneto-optical Kerr effect. The composit ion of the films was the same as that of the original amorphous ribbon s, the optical quality of the surfaces of these films and the magnetic properties was good, and some of the parameters (saturation field, sh ape of the hysteresis loops) were superior to the properties of the or iginal ribbons. The films are promising as erasable materials for magn etic storage and optical retrieval of data, and also for integrated ma gnetic-impedance sensors.