Direct observation of microscopic inhomogeneities in high-Tc superconductors using energy-dispersive diffraction of synchrotron-produced xrays

Earl F. Skelton; Syen B. Qadri; Michael S. Osofsky; A. R. Drews; P. R. Broussard; J. Z. Hu; L. W. Finger; Terrell A. Vanderah; D. Kaiser; J. L. Peng; Steven M. Anlage; Richard L. Greene; John Giapintzakis

doi:10.1117/12.221669

25 September 1995 Direct observation of microscopic inhomogeneities in high-Tc superconductors using energy-dispersive diffraction of synchrotron-produced xrays

Earl F. Skelton, Syen B. Qadri, Michael S. Osofsky, A. R. Drews, P. R. Broussard, J. Z. Hu, L. W. Finger, Terrell A. Vanderah, D. Kaiser, J. L. Peng, Steven M. Anlage, Richard L. Greene, John Giapintzakis

Author Affiliations +

Proceedings Volume 2516, X-Ray Microbeam Technology and Applications; (1995) https://doi.org/10.1117/12.221669
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

Evidence of micron-sized structural inhomogeneities in several high transition temperature (T_c) superconductors is presented. By illuminating samples with high energy, highly collimated x rays produced on a synchrotron wiggler, small changes in the lattice were detected over a spatial scale as small as 10 micrometer. In the YBa₂Cu₃O_7-(delta ) crystals, these changes are interpreted as evidence of variations in the oxygen content and in the Nd_2-xCe_xCuO_4-y crystal, as a variation in the cerium content. Each type of inhomogeneity can affect the superconducting properties.

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Earl F. Skelton, Syen B. Qadri, Michael S. Osofsky, A. R. Drews, P. R. Broussard, J. Z. Hu, L. W. Finger, Terrell A. Vanderah, D. Kaiser, J. L. Peng, Steven M. Anlage, Richard L. Greene, and John Giapintzakis "Direct observation of microscopic inhomogeneities in high-Tc superconductors using energy-dispersive diffraction of synchrotron-produced xrays", Proc. SPIE 2516, X-Ray Microbeam Technology and Applications, (25 September 1995); https://doi.org/10.1117/12.221669

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