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Non-resonant nondestructive technique has been described for investigation of high-temperature superconductive and relative materials through the measurement of the microwave reflection at grazing incidence. As authors discussed earlier, a reflection coefficient of the electromagnetic wave at grazing incidence can be used to determine an absolute complex conductivity over a wide temperature and frequency range. As of now the experimental measurement setup was realized in millimeter wave range using waveguide phase bridge based approach. The conductivity of YBa2Cu3O7- film was measured at temperatures higher than critical. Fig. 5. Ref.: 27 titles.

GRAZING INCIDENCE REFLECTIVITY OF HIGH-Tc SUPERCONDUCTORS: MM WAVE TECHNIQUE OF CONDUCTIVITY MEASUREMENTS