Annealing effects on electrical resistivity, crystallization and thermoelectric power of iron-rich metallic glasses containing molybdenum
Abstract The effect of long annealing (20 hrs) at various temperatures on electrical resistivity, crystallization and thermoelectric power of Fe 78 Mo 2 B 20 , Fe 40 Ni 38 Mo 4 B 18 and Fe 39 Ni 39 Mo 4 Si 6 B 12 has been investigated. Room temperature resistivity of these metallic glasses decreases on annealing regardless of the annealing temperature. Crystallization behaviour does not get much affected on the annealing used in this investigation. Temperature dependence of ϱ(T)/ϱ(RT) remains unaffect at low temperatures but shows increase in its slope at higher temperatures before onset of the crystallization. A preliminary study on the low temperature behaviour of thermoelectric power of Fe 40 Ni 38 Mo 4 B 18 shows that there is only a slight affect due to annealing of the sample at 373 K for 20 hrs.