Abstract

Magnetic field dependences of the direct and the magnetically modulated microwave absorption of a number of Y-, Bi- and Tl-based high-temperature superconductors were measured at 4.2 and 77 K by X-band microwave spectrometer. Correlation between value of the low field maximum of the absorption and the inter-grain critical currents of Josephson junctions was found. Results were analyzed and compared to theoretical models of microwave absorption available in the literature yielding good agreement.

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