Role of buffer layers in the laser-ablated films on metallic substrates

David T. Shaw; E. Narumi; Feng Yang; Sushil Patel

doi:10.1117/12.25750

1 March 1991 Role of buffer layers in the laser-ablated films on metallic substrates

David T. Shaw, E. Narumi, Feng Yang, Sushil Patel

Proceedings Volume 1394, Progress In High-Temperature Superconducting Transistors and Other Devices; (1991) https://doi.org/10.1117/12.25750
Event: Processing Integration, 1990, Santa Clara, CA, United States

Abstract

Critical current density above 10,000 A/sq cm at 77 K and zero magnetic field have been achieved for both YBa2Cu3O6.8(YBCO) thin films on metallic substrates. A transition buffer, consisting of sub-buffers deposited at different temperatures, was used to enhance the crystallinity and the transport properties of YBCO films on metallic substrates. YBCO films were fabricated, using in situ laser deposition, and they were strongly c-axis oriented. Critical temperature of 87 K and critical current density of 30,000 A/sq cm at 77 K were obtained for a 0.5 micron-thick YBCO film. This Jc value is the highest reported for YBCO films on metallic substrates. Also, the magnetic field dependence of Jc and the mechanical properties could be improved by using Pt-coated metallic substrates.

Citation Download Citation

David T. Shaw, E. Narumi, Feng Yang, and Sushil Patel "Role of buffer layers in the laser-ablated films on metallic substrates", Proc. SPIE 1394, Progress In High-Temperature Superconducting Transistors and Other Devices, (1 March 1991); https://doi.org/10.1117/12.25750

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