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Vortex liquid-glass transition up to 60 T in nanoengineered coated conductors grown by metal organic deposition

Source: Appl. Phys. Lett. 96, 072506 (2010); doi:10.1063/1.3310014

Published 17 February 2010

KEYWORDS and PACS
Keywords
PACS
  • 74.25.Wx
    Vortex pinning (includes mechanisms and flux creep)
  • 74.78.-w
    Superconducting films and low-dimensional structures
  • 74.72.-h
    Cuprate superconductors
  • YEAR: 2010
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PUBLICATION DATA
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M. Miura,1,2,3 S. A. Baily,3,4 B. Maiorov,3 L. Civale,3 J. O. Willis,3 K. Marken,3 T. Izumi,1 K. Tanabe,1 and Y. Shiohara1
1Superconductivity Research Laboratory, International Superconductivity Technology Center, 10-13, Shinonome 1-chome, Koto-ku, Tokyo 135-0062, Japan
2Japan Society for the Promotion of Science, 8 Ichibancho, Chiyoda-ku, Tokyo 102-8472, Japan
3Superconductivity Technology Center, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
4National High Magnetic Field Laboratory, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
Higher irreversibility fields (Hirr) increase the upper bound for applications of superconductors and could expand market penetration. We present the studies in pulsed field (up to 65 T) of superconducting films on flexible metal substrates. We investigate the effect of disorder on Hirr at different field orientations for YBa2Cu3Oy and BaZrO3-nanoparticle-dispersed Y0.77Gd0.33Ba2Cu3Oy (YGdBCO+BZO). We find that Hirr is higher for YGdBCO+BZO along the c-axis and at intermediate orientations. The vortex melting transition is investigated using the resistive transition's critical exponent. The behavior can be explained by the mixed pinning landscape from randomly distributed BZO nanoparticles and c-axis correlated disorder. ©2010 American Institute of Physics
History: Received 29 October 2009; accepted 28 December 2009; published 17 February 2010
Permalink: http://link.aip.org/link/?APPLAB/96/072506/1

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