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High critical current density YBa2Cu3O7–δ coatings on LaMnO3-buffered biaxially textured Cu tapes for coated conductor applications

  • T. Aytug (a1), A. Goyal (a1), N. Rutter (a1), M. Paranthaman (a1), J. R. Thompson (a1), H. Y. Zhai (a1) and D. K. Christen (a1)...

Abstract

High critical current density (high-Jc) YBa2Cu3O7–δ (YBCO) films were obtained by pulsed laser ablation on biaxially textured Cu substrates. To achieve epitaxy of LaMnO3 (LMO) on Cu, thin epitaxial Ni overlayers were deposited on Cu tapes. The structure comprises the layer sequence of YBCO/LMO/Ni/Cu. For 200-nm-thick YBCO, self-field Jc values exceeding 1 × 106 A/cm2 at 77 K were achieved. Characterization of these short prototype conductors revealed good structural and morphological properties. Magnetic analysis suggested that hysteretic loss due to the ferromagnetic Ni overlayer is minimal.

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High critical current density YBa2Cu3O7–δ coatings on LaMnO3-buffered biaxially textured Cu tapes for coated conductor applications

  • T. Aytug (a1), A. Goyal (a1), N. Rutter (a1), M. Paranthaman (a1), J. R. Thompson (a1), H. Y. Zhai (a1) and D. K. Christen (a1)...

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