INFLUENCE OF RADIATION ON THE OPTICAL PROPERTIES OF SUPERCONDUCTING YTTRIUM CERAMICS

The purpose of this work is to study the effect of vacuum annealing and irradiation on the IR absorption spectra in the frequency range 400-4000см^-1 and the superconducting properties of yttrium ceramics. The infrared (IR) absorption spectra of superconducting yttrium ceramics, subjected to preliminary vacuum annealing at temperatures of 175, 500, 670 and 920°C and irradiation with gamma rays and protons, were studied. Superconducting properties change has been discovered, and the transformation of the IR absorption spectra of YBa₂Cu₃O_7-𝜎 after annealing and irradiation is discussed. Samples of superconducting ceramics YBa₂Cu₃O_7-𝜎 in powder form were subjected to hour-long annealing in vacuum at temperatures of 175, 500, 670 and 920 °C, followed by cooling with continuous pumping for 2 hours. The results of O₂ photoabsorption studying in BeO using infrared (IR) spectroscopy and manometry show that the samples are most active at 473 K in pre-annealing temperature changes from 473 K to 1073 K. High activity in γ irradiated beryllium oxide is observed in annealed samples at 673 K. Superconducting phase appearance in them was checked using the inductive method after this treatment. Such studies are of great importance for improving the properties of superconducting materials, enhancing their efficiency, and developing new technologies.

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