Superconducting Transition of GdBa2Cu3O7-x

Abstract
The superconducting transition of GdBa2Cu3O7-x has been studied in terms of complex susceptibility and ac resistance. The results suggest the superconducting transition of a disk sample takes place through the concurrence of the bulk and coupled phases. The ac-resistive measurement of a disk sample as well as the complex-susceptibility measurement of a powdered sample support the above results. Discussion was made with the aid of the weak-link loop model.

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