ملخص: We investigated the influence of the field sweep rate dH/dt (3Oe/s2Cu3O7-d at different temperatures and for a fixed fields parallel to the c-axis. The initial stage of the relaxation is imposed by the macroscopic sample dimension and the field sweep rate. As a result, all the relaxation curves, at a given field and temperature, collapse into a single one that is independent from the experimental conditions by a transformation t-->t+[tau] in which [tau] is a transient time. The experimental values of [tau] coincides well with literature.

لغة: إنجليزية