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Title: Direct observation of microscopic inhomogeneities in high {Tc} superconductors using energy-dispersive diffraction of synchrotron produced x-rays

Abstract

Evidence of micron-sized structural inhomogeneities in several high transition temperature ({Tc}) 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 {micro}m. In the YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} crystals, these changes are interpreted as evidence of variations in the oxygen content and in the Nd{sub 2{minus}x}Ce{sub x}CuO{sub 4{minus}y} crystal, as a variation in the cerium content. Each type of inhomogeneity can affect the superconducting properties.

Authors:
; ;  [1]
  1. Naval Research Lab., Washington, DC (United States); and others
Publication Date:
OSTI Identifier:
220788
Report Number(s):
CONF-950793-
ISBN 0-8194-1875-7; TRN: IM9620%%182
Resource Type:
Book
Resource Relation:
Conference: 40. annual meeting of the Society of Photo-Optical Instrumentation Engineers, San Diego, CA (United States), 9-14 Jul 1995; Other Information: PBD: 1995; Related Information: Is Part Of X-ray microbeam technology and applications; Yun, W. [ed.] [Argonne National Lab., IL (United States). Advanced Photon Source]; PB: 249 p.; Proceedings/SPIE, Volume 2516
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 66 PHYSICS; YTTRIUM OXIDES; CRYSTAL STRUCTURE; X-RAY DIFFRACTION; BARIUM OXIDES; COPPER OXIDES; NEODYMIUM OXIDES; CERIUM OXIDES; HIGH-TC SUPERCONDUCTORS; EXPERIMENTAL DATA; X RADIATION; SUPERCONDUCTIVITY; LATTICE PARAMETERS

Citation Formats

Skelton, E F, Qadri, S B, and Osofsky, M S. Direct observation of microscopic inhomogeneities in high {Tc} superconductors using energy-dispersive diffraction of synchrotron produced x-rays. United States: N. p., 1995. Web.
Skelton, E F, Qadri, S B, & Osofsky, M S. Direct observation of microscopic inhomogeneities in high {Tc} superconductors using energy-dispersive diffraction of synchrotron produced x-rays. United States.
Skelton, E F, Qadri, S B, and Osofsky, M S. Sun . "Direct observation of microscopic inhomogeneities in high {Tc} superconductors using energy-dispersive diffraction of synchrotron produced x-rays". United States.
@article{osti_220788,
title = {Direct observation of microscopic inhomogeneities in high {Tc} superconductors using energy-dispersive diffraction of synchrotron produced x-rays},
author = {Skelton, E F and Qadri, S B and Osofsky, M S},
abstractNote = {Evidence of micron-sized structural inhomogeneities in several high transition temperature ({Tc}) 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 {micro}m. In the YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} crystals, these changes are interpreted as evidence of variations in the oxygen content and in the Nd{sub 2{minus}x}Ce{sub x}CuO{sub 4{minus}y} crystal, as a variation in the cerium content. Each type of inhomogeneity can affect the superconducting properties.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1995},
month = {12}
}

Book:
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