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Low-temperature formation of YBa2Cu3O7−x superconducting films from molecular Cu-Ba-Y precursors (1992)

Rupich, M. W. ; Liu, Y. P. ; Ibechem, J.

Woodbury, NY : American Institute of Physics (AIP)

Applied Physics Letters 60 (1992), S. 1384-1386

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ISSN: 1077-3118

Source: AIP Digital Archive

Topics: Physics

Notes: Highly oriented superconducting YBa2Cu3O7−x films were prepared on (100) LaAlO3 and (100) yttria-stabilized ZrO2 (YSZ) substrates by sequential thermolysis and oxidation of Cu-Ba-Y μ-oxo alkoxide precursor films at 730 °C. The precursor films were deposited by standard spin-coating techniques. The electrical properties and surface morphology of the YBa2Cu3O7−x films are determined primarily by the thermolysis conditions. YBa2Cu3O7−x films processed at 730 °C show metallic behavior in the normal state and sharp resistive superconducting transitions with Tc (R=0) at 89.5 K. Critical current densities of 2×105 A/cm2 at 77 K were obtained with YBa2Cu3O7−x films on YSZ substrates. X-ray diffraction analysis shows a preferential c-axis alignment normal to the substrate plane.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.107298

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