ANALISIS POR EMISION DE RAYOS X ALEACIONES 1 ALLOYS 1 CINETICA 1 COOLING 1 ENFRIAMIENTO 1 High-Tc superconductors 1 IMANTACION 1 KINETICS 1 Magnetization 1 ORDER-DISORDER TRANSFORMATIONS 1 PHASE TRANSFORMATIONS 1 Phase Transformations in Ag48Zn5oAu2 and Ag48Zn5oCu2 Alloys 1 REGISTRO DE LA RESISTIVIDAD 1 RESISTIVITY LOGGING 1 SUPERCONDUCTORES DE TC ALTO 1 Softening of the flux-line structure in La1.8Sr0.2CuO4 measured by a vibrating reed 1 TRANSFORMACIONES DE FASE 1 TRANSFORMACIONES ORDEN-DESORDEN 1 X-RAY EMISSION ANALYSIS 1 X-ray emission analysis 1