PROCEDE DE GRAVURE MAGNETIQUE, POUR NOTAMMENT L'ENREGISTREMENT MAGNETIQUE OU MAGNETO-OPTIQUE

摘要

The invention concerns a magnetic engraving method characterised in that it consists in controlled irradiation of a material in thin layers to locally modify, over zones with micrometric width or less, said material magnetic properties, such as in particular its coercivity, its magnetic anisotropy and its Curie temperature.