SUPERCONDUCTIVITY AMORPHOUS STATE ANNEALING CAMPOS MAGNETICOS COPPER ALLOYS DIAMAGNETISM DIMENSIONS DOMAIN STRUCTURE FLUJO MAGNETICO FLUXOID Fluxoid quantum number at Hc3 Fluxoids INFLUENCIA DE LA TEMPERATURA LANTHANUM BASE ALLOYS MAGNETIC FIELD MAGNETIC FIELDS MAGNETIC FLUX MAGNETIC PROPERTIES MAGNETIZATION MEAN FREE PATH METHYLENE RADICALS Magnetic fields Metallurgical phase separation Model relating superconductive penetration depth and metallurgical phase separation in amorphous La70 Cu30 Model relating superconductive penetration depth and metallurgical phase separation in amorphous La70Cu30 PARAMAGNETISM PENETRATION DEPTH PHASE TRANSFORMATIONS PROFUNDIDAD DE PENETRACION PROPIEDADES MAGNETICAS