Study of the oxygen distribution in YBa2Cu3O7−x ceramics by (n, α) radiography technique
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A technique to determine the oxygen distribution in high Tc superconducting YBa2Cu3O7−x ceramics has been developed which is based on the (n, α) radiography method. The technique enables the non-destructive study of superconducting ceramics as well as monocrystal samples with spatial resolution not worse than 1 μm at a relative standard deviation of 1.5%. This technique is used to study the influence of radiation-stimulated diffussion of oxygen on the formation of the superconducting phase in an yttrium ceramic. The oxygen distribution in the samples with a narrow transition (ΔT≈1 K) and with a transition widened (ΔT≈10 K) by thermal and thermo-radiative treatment is compared in the experiment. The oxygen distribution radiographs of irradiated and unirradiated samples provide strong evidence for the influence of irradiation on the ordering of superconducting ceramics structure.
KeywordsOxygen Standard Deviation Physical Chemistry Inorganic Chemistry Strong Evidence
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