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Fabrication by Inclined-Substrate Deposition of Biaxially Textured Buffer Layer for Coated Conductors

  • U. Balachandran (a1), B. Ma (a1), M. Li (a1), R. E. Koritala (a1), B. L. Fisher (a1), R. A. Erck (a1) and S. E. Dorris (a1)...

Abstract

Inclined substrate deposition (ISD) offers the potential for rapid production of high-quality biaxially textured buffer layers suitable for YBCO-coated conductors. We have grown biaxially textured MgO films by ISD at deposition rates of 20–100 Å/sec. Columnar grain structures with a roof-tile-shaped surface were observed in the ISD-MgO films. X-ray pole figure analysis revealed that the (002) planes of the ISD-MgO films are titled at an angle from the substrate normal. A small phi-scan full-width at half maximum (FWHM) of ≈9° was observed on MgO films deposited at an inclination angle of 55°. YBCO films were also grown on ISD-MgO-buffered Hastelloy C276 substrates by pulsed laser deposition. We obtained a critical current density of ≈2 × 105 A/cm2 at 77 K in self-field on 0.5-μm-thick, 0.5-cm-wide, 1-cm-long samples. This work has demonstrated that biaxially textured ISD MgO buffer layers deposited on metal substrates are promising candidates for fabrication of high-quality YBCO-coated conductors.

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Fabrication by Inclined-Substrate Deposition of Biaxially Textured Buffer Layer for Coated Conductors

  • U. Balachandran (a1), B. Ma (a1), M. Li (a1), R. E. Koritala (a1), B. L. Fisher (a1), R. A. Erck (a1) and S. E. Dorris (a1)...

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