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Growth of thick Yba2Cu3O7−δ films carrying a critical current of over 230 A/cm on single LaMnO3-buffered ion-beam assisted deposition MgO substrates

  • M. Paranthaman (a1), T. Aytug (a1), D. K. Christen (a1), P. N. Arendt (a2), S. R. Foltyn (a2), J. R. Groves (a2), L. Stan (a2), R. F. DePaula (a2), H. Wang (a2) and T. G. Holesinger (a2)...

Abstract

A single LaMnO3 buffer layer was developed for the growth of superconducting thick YBa2Cu3O7−δ (YBCO) films on polycrystalline Ni-alloy substrates where a biaxially textured MgO layer, produced by ion-beam assisted deposition (IBAD), was used as a template. Using pulsed laser deposition, a 1.65-μm-thick YBCO film with a critical current density of 1.4 × 106 A/cm2 in self field at 75 K was achieved on sputtered LaMnO3-buffered IBAD MgO substrates. This corresponds to a critical current (Ic) of 231 A/cm-width. This result demonstrates the possibility of using both LaMnO3 buffer and IBAD MgO template for producing high current density YBCO-coated conductors.

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Growth of thick Yba2Cu3O7−δ films carrying a critical current of over 230 A/cm on single LaMnO3-buffered ion-beam assisted deposition MgO substrates

  • M. Paranthaman (a1), T. Aytug (a1), D. K. Christen (a1), P. N. Arendt (a2), S. R. Foltyn (a2), J. R. Groves (a2), L. Stan (a2), R. F. DePaula (a2), H. Wang (a2) and T. G. Holesinger (a2)...

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