Title :
Magnesium Diboride Flexible Flat Cables for Cryogenic Electronics
Author :
Yung, Chris S. ; Moeckly, Brian H.
Author_Institution :
Supercond. Technol., Inc., Santa Barbara, CA, USA
fDate :
6/1/2011 12:00:00 AM
Abstract :
Magnesium diboride (MgB2) thin films are a potential alternative to low-temperature superconductors (LTS) due to a higher critical temperature (Tc) of approximately 39 K. The reactive evaporation deposition technique also affords relatively simple growth of MgB2 films on flexible substrates compared to high-temperature superconductors (HTS). We have designed and fabricated a cable architecture consisting of MgB2 traces on flexible yttria-stabilized zirconia (YSZ) compatible with commercially available connectors or direct wirebonds. Key performance metrics such as critical current density (Jc) and Tc are measured and compared. We discuss thermal conductivity and passivation schemes for these cables.
Keywords :
cables (electric); critical current density (superconductivity); cryogenic electronics; electric connectors; magnesium compounds; passivation; superconducting thin films; superconducting transition temperature; thermal conductivity; MgB2; MgB2 film growth; Y2O3-ZrO2; cable architecture; connectors; critical current density; critical temperature; cryogenic electronics; direct wirebonds; flexible flat cables; flexible substrates; flexible yttria-stabilized zirconia; low-temperature superconductors; magnesium diboride thin films; passivation schemes; reactive evaporation deposition technique; thermal conductivity; Conductivity; Connectors; High temperature superconductors; Printed circuits; Substrates; Temperature measurement; Thermal conductivity; ${rm MgB}_{2}$; Cryogenic electronics; interconnections; superconducting devices; superconducting thin films;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2010.2080655
