5 July 1996 Structural inhomogeneities in crystals of YBa2Cu307-δ
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Abstract
Structural inhomogeneities in crystals of YBa2Cu3O7-(delta ) are characterized using high resolution x-ray diffraction. Rocking curves and a high resolution specular radial scan show features indicating that the crystals are not truly 'single'. The high resolution radial scan of a crystal that had a superconducting transition width of only one-half Kelvin, as determined by ac susceptibility, and appeared to be free of gross defects, when examined with conventional x-ray diffraction techniques, shows a distribution in the c-axis lattice parameter. These results suggest that crystals with sharp transitions should be carefully examined for the presence of structural anomalies which might influence the superconductive properties.
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Michael S. Osofsky, Michael S. Osofsky, Syen B. Qadri, Syen B. Qadri, Earl F. Skelton, Earl F. Skelton, Terrell A. Vanderah, Terrell A. Vanderah, "Structural inhomogeneities in crystals of YBa2Cu307-δ", Proc. SPIE 2697, Oxide Superconductor Physics and Nano-Engineering II, (5 July 1996); doi: 10.1117/12.250228; https://doi.org/10.1117/12.250228
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