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The Physics of Metals and Metallography

, Volume 117, Issue 9, pp 870–875 | Cite as

Effect of water intercalation on the structure and electrophysical properties of YBa2Cu3O6.9

  • I. B. Bobylev
  • N. A. Zyuzeva
  • M. V. Degtyarev
  • E. G. Gerasimov
  • Yu. S. Ponosov
  • V. P. Pilyugin
Electrical and Magnetic Properties
  • 33 Downloads

Abstract

The influence of water vapors and plastic deformation on the structure and electrophysical properties of YBa2Cu3O6.9 (123) has been studied. It has been established that, at T = 200°C, the introduction of water into the structure of YBa2Cu3O6.9 leads to its transition into a defect tetragonal phase of the 124 type as a result of the formation of planar stacking faults. After annealing at T = 930°C, these defects are partially retained and are efficient centers of pinning in the magnetic fields applied perpendicularly to the c axis, which makes it possible to increase (by an order of magnitude) the critical current density in the high-textured ceramics at 77 K in the external magnetic field of 5–10 T. The plastic deformation of the hydrated ceramics favors the reverse transition of the arising 124 phase to the 123 phase at T = 930°C and is accompanied by a recrystallization of the material, which leads to the appearance of a texture and an increase the critical current density.

Keywords

HTSC heat treatment effect of water electrophysical properties structure 

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Copyright information

© Pleiades Publishing, Ltd. 2016

Authors and Affiliations

  • I. B. Bobylev
    • 1
  • N. A. Zyuzeva
    • 1
  • M. V. Degtyarev
    • 1
  • E. G. Gerasimov
    • 1
  • Yu. S. Ponosov
    • 1
  • V. P. Pilyugin
    • 1
  1. 1.Institute of Metal Physics, Ural BranchRussian Academy of SciencesEkaterinburgRussia

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