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Structural and Magnetic Properties of Untwinned Yba2Cu3O6+x Single Crystals

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Abstract

We have conducted structural and magnetic investigations on thermomechanically-detwinned YBa2Cu3O6+x single crystals. Single crystal x-ray diffraction studies on a fully untwinned crystal with a superconducting onset temperature of 54 K have revealed that oxygen atoms in the basal plane are offset from the crystallographic mirror plane in the a direction, leading to “zig-zag” Cu-O chains. Magnetic measurements on untwinned and twinned crystals at 77 K indicate low levels of flux pinning in both crystals, with a slightly larger amount of pinning in the twinned crystal.

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Authors and Affiliations

  1. National Institute of Standards and Technology, Materials Science and Engineering Laboratory, Gaithersburg, MD, 20899, USA

    Debra L. Kaiser, Frank W. Gayle, Lydon J. Swartzendruber & Winnie Wong-Ng

  2. Dept. of Chemistry, Louisiana State University, Baton Rouge, LA, 70803, USA

    Steven F. Watkins & Frank R. Fronczek

Authors
  1. Debra L. Kaiser
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  2. Frank W. Gayle
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  3. Lydon J. Swartzendruber
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  4. Winnie Wong-Ng
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  5. Steven F. Watkins
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  6. Frank R. Fronczek
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Kaiser, D.L., Gayle, F.W., Swartzendruber, L.J. et al. Structural and Magnetic Properties of Untwinned Yba2Cu3O6+x Single Crystals. MRS Online Proceedings Library 169, 793–796 (1989). https://doi.org/10.1557/PROC-169-793

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