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    Deposition and Single-Step Processing of YBCO Thick Films for Multilayered Electronics

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    Date
    2005-09-22
    Author
    Langman, Jonathan
    Lynch, Matthew
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    Abstract
    The goal of this project was to successfully cofire a screen-printed yttrium bar ium copper oxide (YBCO) superconductor onto a low-temperature cofired ceramic (LTCC) substrate. The purpose was to investigate the compatibility of thick-film, high-temperature superconductors with multilayered ceramic (MLC) packages for cryogenic applications. Paste consisting of standard organics and YBCO powder of -325 mesh particle size was screen-printed onto Dupont 951 Green Tape. The system was cofired at temperatures ranging from 925°C to 975°C. The quality of the cofired system was characterized in several ways: Meissner diamagnetism, scanning electron microscopy, x-ray diffraction, and AC susceptibility tests were performed to determine the superconducting capability of the system. Samples cofired at 950°C retained some superconductivity after firing and showed the best compromise be­tween sintering and degradation.
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    http://hdl.handle.net/10919/90352
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    • Journal of Undergraduate Materials Research [61]

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