STP1220

    A New Technique to Produce Josephson Junctions Based on Controlled Crack Growth Techniques

    Published: Jan 1995


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    Abstract

    The ability to introduce microcracks by placing multiple microindentations in pre-defined locations in a single crystal substrate opens the possibility for the use of microindentation techniques for electronic device fabrication. It is the objective of this study to demonstrate the possibility of fabricating a superconducting Josephson junction (JJ) by using microindentation cracking techniques. Other potential areas where microindentation techniques can be applied for device fabrication are RF microcircuitry and fiber optics. Once a microindentation is produced, with its associated crack pattern, a means of growing the cracks is required. In this study we present three methods of crack growth, a bending moment method, a thermal stressing method and a crack tip to tip bridging method. Results of these methods applied to single crystal MgO and LaAlO3 are discussed.

    Keywords:

    superconductors, Josephson junctions, indentation microcracks, single crystal, magnesia, lanthanum aluminate


    Author Information:

    Perez, I
    Physicist, Mechanical Engineer and Team Leader, Naval Air Warfare Center, Warminster, PA

    Granata, D
    Physicist, Mechanical Engineer and Team Leader, Naval Air Warfare Center, Warminster, PA

    Scott, WR
    Physicist, Mechanical Engineer and Team Leader, Naval Air Warfare Center, Warminster, PA


    Paper ID: STP14597S

    Committee/Subcommittee: E08.06

    DOI: 10.1520/STP14597S


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